HR job title
- Retired Professor
- Contact Info
- 1 979 862 3967
Childs, Dara Professor
Positions
- Professor, Mechanical Engineering, College of Engineering
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Overview
Publications
selected publications
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academic article
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Zhang, M., Childs, D. W., Tran, D. L., & Shresth, H.
(2020).
Effects of Clearance on the Performance of a Labyrinth Seal Under Wet-Gas Conditions. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
142(11),
-
Childs, D. W.
(2020).
Discussion of "Non-Axisymmetric Flows and Rotordynamic Forces in an Eccentric Shrouded Centrifugal Compressor-Part 1: Measurement" (Song, J., Kim, S., Park, T. C., Cha, B.-J., Lim, D. H., Hong, J. S., Lee, T. W., and Song, S. J., ASME J. Eng. Gas Turbines Power, 141(11), p. 111014). Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
142(10),
-
Childs, D. W.
(2020).
Discussion of "Non-Axisymmetric Flows and Rotordynamic Forces in an Eccentric Shrouded Centrifugal Compressor-Part 2: Analysis" (Song, J., and Song S. J., ASME J. Eng. Gas Turbines Power, 141(11), p. 111015). Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
142(10),
-
Tran, D. L., Childs, D. W., Shrestha, H., & Zhang, M.
(2020).
Preswirl and Mixed-Flow (Mainly Liquid) Effects on Rotordynamic Performance of a Long (L/D=0.75) Smooth Seal. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
142(3),
-
Zhang, M., & Childs, D. W.
(2020).
A Study for Rotordynamic and Leakage Characteristics of a Long-Honeycomb Seal With Two-Phase, Mainly Air Mixtures. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
142(1),
-
Zhang, M., Childs, D. W., Tran, D. L., & Shrestha, H.
(2020).
A Study on the Leakage and Rotordynamic Coefficients of a Long-Smooth Seal With Laminar-Two-Phase, Mainly-Oil Mixtures. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
142(1),
-
Zhang, M., & Childs, D. W.
(2019).
A Study on the Leakage and Rotordynamic Performance of a Long Labyrinth Seal Under Mainly Air Conditions. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
141(12),
-
Shrestha, H., Childs, D. W., Tran, D. L., & Zhang, M.
(2019).
Experimental Study of the Static and Dynamic Characteristics of a Long (L/D=0.75) Labyrinth Annular Seal Operating Under Two-Phase (Liquid/Gas) Conditions. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
141(11),
-
Childs, D. W., & Esser, P.
(2019).
Measurements Versus Predictions for a Hybrid (Hydrostatic Plus Hydrodynamic) Thrust Bearing for a Range of Orifice Diameters. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
141(6),
-
Zhang, M., Childs, D. W., Tran, D. L., & Shrestha, H.
(2019).
Clearance Effects on Rotordynamic Performance of a Long Smooth Seal With Two-Phase, Mainly-Air Mixtures. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
141(1),
-
Moreland, J. A., Childs, D. W., & Bullock, J. T.
(2018).
Measured Static and Rotordynamic Characteristics of a Smooth-Stator/Grooved-Rotor Liquid Annular Seal. Journal of Fluids Engineering.
140(10),
-
Norrbin, C. S., & Childs, D. W.
(2018).
Lateral Equilibrium Position Analysis Program With Applications to Electric Submersible Pumps. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
140(6),
-
Zhang, M., Mclean, J., & Childs, D. W.
(2017).
Experimental Study of the Static and Dynamic Characteristics of a Long Smooth Seal With Two-Phase, Mainly Air Mixtures. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
139(12), 122504.
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Norrbin, C. S., Childs, D. W., & Phillips, S.
(2017).
Including Housing-Casing Fluid in a Lateral Rotordynamics Analysis on Electric Submersible Pumps. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
139(6),
-
Kilgore, J. J., & Childs, D. W.
(2017).
Rotordynamic coefficients and leakage flow of circumferentially-grooved liquid-seals. 81 ), 195-203.
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Gaines, J. E., & Childs, D. W.
(2016).
The Impact of Pad Flexibility on the Rotordynamic Coefficients of Tilting-Pad Journal Bearings. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
138(8), 082501.
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Childs, D. W., Mclean, J., Zhang, M., & Arthur, S. P.
(2016).
Rotordynamic Performance of a Negative-Swirl Brake for a Tooth-on-Stator Labyrinth Seal. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
138(6), 062505.
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Muhammed, A., & Childs, D. W.
(2016).
Vibration Modeling and Experimental Results of Two-Phase Twin-Screw Pump. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
138(9),
-
Muhammed, A., & Childs, D. W.
(2015).
VIBRATION MODELING AND EXPERIMENTAL RESULTS OF TWO PHASE TWIN-SCREW PUMP. 138(9), 092601.
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Tschoepe, D. P., & Childs, D. W.
(2014).
Measurements Versus Predictions for the Static and Dynamic Characteristics of a Four-Pad, Rocker-Pivot, Tilting-Pad Journal Bearing. 136(5), 052501.
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Childs, D. W., & Muhammed, A.
(2014).
Comments on a Newly-Identified Destabilizing Rotordynamic Mechanism Arising in Vertical Hydraulic Turbines and the Back Shrouds of Centrifugal Impellers. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
136(4), 042502.
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Childs, D. W., Arthur, S., & Mehta, N. J.
(2014).
The Impact of Hole Depth on the Rotordynamic and Leakage Characteristics of Hole-Pattern-Stator Gas Annular Seals. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
136(4), 042501.
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Vannarsdall, M., & Childs, D. W.
(2014).
Static and Rotordynamic Characteristics for a New Hole-Pattern Annular Gas Seal Design Incorporating Larger Diameter Holes. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
136(2), 022507.
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Mehta, N. J., & Childs, D. W.
(2014).
Measured Comparison of Leakage and Rotordynamic Characteristics for a Slanted-Tooth and a Straight-Tooth Labyrinth Seal. 136(1), 012501.
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Avendano, R. D., & Childs, D. W.
(2013).
One Explanation for Two-Times Running Speed Response Due to Misalignment in Rotors Connected by Flexible Couplings. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
135(6), 062501.
-
Muhammed, A., & Childs, D. W.
(2013).
Rotordynamics of a Two-Phase Flow Twin Screw Pump. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
135(6), 062502.
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Wilkes, J. C., & Childs, D. W.
(2013).
Improving Tilting Pad Journal Bearing Predictions-Part I: Model Development and Impact of Rotor Excited Versus Bearing Excited Impedance Coefficients. 135(1), 012502.
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Wilkes, J. C., & Childs, D. W.
(2013).
Improving Tilting-Pad Journal Bearing Predictions-Part II: Comparison of Measured and Predicted Rotor-Pad Transfer Functions for a Rocker-Pivot Tilting-Pad Journal Bearing. 135(1), 012503.
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Brown, P. D., & Childs, D. W.
(2012).
Measurement Versus Predictions of Rotordynamic Coefficients of a Hole-Pattern Gas Seal With Negative Preswirl. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
134(12), 122503.
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Wilkes, J. C., & Childs, D. W.
(2012).
Tilting Pad Journal Bearings-A Discussion on Stability Calculation, Frequency Dependence, and Pad and Pivot. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
134(12), 122508.
-
Childs, D. W., & Saha, R.
(2012).
A New, Iterative, Synchronous-Response Algorithm for Analyzing the Morton Effect. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
134(7), 072501.
-
Childs, D. W., & Kumar, D.
(2012).
Dry-Friction Whip and Whirl Predictions for a Rotor-Stator Model With Rubbing Contact at Two Locations. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
134(7), 072502.
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Kulhanek, C. D., & Childs, D. W.
(2012).
Measured Static and Rotordynamic Coefficient Results for a Rocker-Pivot, Tilting-Pad Bearing With 50 and 60% Offsets. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
134(5), 052505.
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Childs, D. W., Kheireddin, B., Phillips, S., & Asirvatham, T. D.
(2011).
Friction Factor Behavior From Flat-Plate Tests of Smooth and Hole-Pattern Roughened Surfaces With Supply Pressures up to 84 bars. 133(9), 092504.
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Childs, D. W., & Carter, C. R.
(2011).
Rotordynamic Characteristics of a Five Pad, Rocker-Pivot, Tilting Pad Bearing in a Load-on-Pad Configuration; Comparisons to Predictions and Load-Between-Pad Results. 133(8), 082503.
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Gupta, M. K., & Childs, D. W.
(2010).
Rotordynamic Stability Predictions for Centrifugal Compressors Using a Bulk-Flow Model to Predict Impeller Shroud Force and Moment Coefficients. 132(9), 091402.
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Thorat, M. R., & Childs, D. W.
(2010).
Predicted Rotordynamic Behavior of a Labyrinth Seal as Rotor Surface Speed Approaches Mach 1. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
132(11), 112504.
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Childs, D., & Harris, J.
(2009).
Static Performance Characteristics and Rotordynamic Coefficients for a Four-Pad Ball-in-Socket Tilting Pad Journal Bearing. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
131(6), 062502.
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Carter, C. R., & Childs, D. W.
(2009).
Measurements Versus Predictions for the Rotordynamic Characteristics of a Five-Pad Rocker-Pivot Tilting-Pad Bearing in Load-Between-Pad Configuration. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
131(1), 012507.
-
Al-Jughaiman, B., & Childs, D.
(2008).
Static and Dynamic Characteristics for a Pressure-Dam Bearing. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
130(5), 052501.
-
Shin, Y., & Childs, D. W.
(2008).
The impact of real gas properties on predictions of static and rotordynamic properties of the annular gas seals for injection compressors. 130(4), 042504.
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Zutavern, Z. S., & Childs, D. W.
(2008).
Identification of rotordynamic forces in a flexible rotor system using magnetic bearings. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
130(2), 022504.
-
Gupta, M. K., Soulas, T. A., & Childs, D. W.
(2008).
New steps to improve rotordynamic stability predictions of centrifugal compressors. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
130(2), 022505.
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Childs, D. W., Shin, Y., & Seifert, B.
(2008).
A Design to Improve the Effective Damping Characteristics of Hole-Pattern-Stator Annular Gas Seals. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
130(1), 012505.
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Childs, D.
(2007).
Discussion: The Lomakin Effect in Annular Gas Seals Under Choked Flow Conditions (Arghir, M., Defaye, C., and Frne, F., 2007, ASME J. Eng. Gas Turbines Power, 129, pp. 10281034). 129(4), 1143-1143.
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Childs, D. W., & Bhattacharya, A.
(2007).
Prediction of dry-friction whirl and whip between a rotor and a stator. Journal of Vibration and Acoustics: Transactions of the ASME.
129(3), 355-362.
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Childs, D. W., Graviss, M., & Rodriguez, L. E.
(2007).
Influence of groove size on the static and rotordynamic characteristics of short, laminar-flow annular seals. 129(2), 398-406.
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Sprowl, T. B., & Childs, D. W.
(2007).
A Study of the Effects of Inlet Preswirl on the Dynamic Coefficients of a Straight-Bore Honeycomb Gas Damper Seal. 129(1), 220-229.
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Smalley, A. J., Camatti, M., Childs, D. W., Hollingsworth, J. R., Vannini, G., & Carter, J. J.
(2006).
Dynamic characteristics of the diverging taper honeycomb-stator seal. Journal of Turbomachinery.
128(4), 717-724.
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Al-Ghasem, A. M., & Childs, D. W.
(2006).
Rotordynamic coefficients measurements versus predictions for a high-speed flexure-pivot tilting-pad bearing (load-between-pad configuration). 128(4), 896-906.
-
Rodriguez, L. E., & Childs, D. W.
(2006).
Frequency dependency of measured and predicted rotordynamic coefficients for a load-on-pad flexible-pivot tilting-pad bearing. 128(2), 388-395.
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Childs, D. W., Rodriguez, L. E., Cullotta, V., Al-Ghasem, A., & Graviss, M.
(2006).
Rotordynamic-coefficients and static (equilibrium loci and leakage) characteristics laminar-flow for annular seals. Journal of Tribology.
128(2), 378-387.
-
Villasmil, L. A., Chen, H. C., & Childs, D. W.
(2005).
Evaluation of near-wall turbulence models for deliberately roughened liquid annular seals. AIAA Journal: devoted to aerospace research and development.
43(10), 2137-2146.
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Picardo, A., & Childs, D. W.
(2005).
Rotordynamic coefficients for a tooth-on-stator labyrinth seal at 70 bar supply pressures: Measurements versus theory and comparisons to a hole-pattern stator seal. 127(4), 843-855.
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Villasmil, L. A., Childs, D. W., & Chen, H. C.
(2005).
Understanding friction factor behavior in liquid annular seals with deliberately roughened surfaces. Journal of Tribology.
127(1), 213-222.
-
Childs, D. W., & Wade, J.
(2004).
Rotordynamic-Coefficient and Leakage Characteristics for Hole-Pattern-Stator Annular Gas SealsMeasurements Versus Predictions. Journal of Tribology.
126(2), 326-333.
-
Weatherwax, M., & Childs, D. W.
(2003).
Theory versus experiment for the rotordynamic characteristics of a high pressure honeycomb annular gas seal at eccentric positions. 125(2), 422-429.
-
Childs, D. W.
(2003).
Twice-running-speed response due to elliptical bearing clearances. Journal of Vibration and Acoustics: Transactions of the ASME.
125(1), 64-67.
-
Dawson, M. P., Childs, D. W., Holt, C. G., & Phillips, S. G.
(2002).
Measurements versus predictions for the dynamic impedance of annular gas seals - Part I: Test facility and apparatus. 124(4), 958-962.
-
Dawson, M. P., & Childs, D. W.
(2002).
Measurements versus predictions for the dynamic impedance of annular gas seals - Part II: Smooth and honeycomb geometries. 124(4), 963-970.
-
D'Souza, R. J., & Childs, D. W.
(2002).
A comparison of rotordynamic-coefficient predictions for annular honeycomb gas seals using three different friction-factor models. Journal of Tribology.
124(3), 524-529.
-
Laurant, F., & Childs, D. W.
(2002).
Measurements of rotordynamic coefficients of hybrid bearings with (a) a plugged orifice, (b) a worn land surface. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
124(2), 363-368.
-
Holt, C. G., Childs, D., & Childs, D. W.
(2002).
Theory versus experiment for the rotordynamic impedances of two hole-pattern-stator gas annular seals. Journal of Tribology.
124(1), 137-143.
-
Childs, D. W.
(2001).
A note on Kellenberger's model for spiral vibrations. Journal of Vibration and Acoustics: Transactions of the ASME.
123(3), 405-408.
-
Nielsen, K. K., Childs, D. W., & Myllerup, C. M.
(2001).
Experimental and theoretical comparison of two swirl brake designs. 123(2), 353-358.
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Lindsey, W. T., & Childs, D. W.
(2000).
The Effects of Converging and Diverging Axial Taper on the Rotordynamic Coefficients of Liquid Annular Pressure Seals: Theory Versus Experiment. 122(2), 126-131.
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Laurant, F., & Childs, D. W.
(1999).
Rotordynamic evaluation of a near-tangential-injection hybrid bearing. Journal of Tribology.
121(4), 886-891.
-
Soto, E. A., & Childs, D. W.
(1999).
Experimental rotordynamic coefficient results for (a) a labyrinth seal with and without shunt injection and (b) a honeycomb seal. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
121(1), 153-159.
-
Fayolle, P., & Childs, D. W.
(1999).
Rotordynamic evaluation of a roughened-land hybrid bearing. Journal of Tribology.
121(1), 133-138.
-
Childs, D. W., & Fayolle, P.
(1999).
Test results for liquid "damper" seals using a round-hole roughness pattern for the stators. Journal of Tribology.
121(1), 42-49.
-
Yu, Z., & Childs, D. W.
(1998).
A comparison of experimental rotordynamic coefficients and leakage characteristics between hole-pattern gas damper seals and a honeycomb seal. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
120(4), 778-783.
-
Mosher, P., & Childs, D. W.
(1998).
Theory Versus Experiment for the Effects of Pressure Ratio on the Performance of an Orifice-Compensated Hybrid Bearing. Journal of Vibration and Acoustics: Transactions of the ASME.
120(4), 930-936.
-
Kleynhans, G. F., & Childs, D. W.
(1997).
The acoustic influence of cell depth on the rotordynamic characteristics of smooth-rotor/honeycomb-stator annular gas seals. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
119(4), 949-956.
-
Childs, D.
(1997).
Case for industrially-sponsored university research. Turbomachinery International.
38(5), 30.
-
Marquette, O. R., Childs, D. W., & SanAndres, L.
(1997).
Eccentricity effects on the rotordynamic coefficients of plain annular seals: Theory versus experiment. Journal of Tribology.
119(3), 443-447.
-
San Andres, L., & Childs, D.
(1997).
Angled InjectionHydrostatic Bearings Analysis and Comparison to Test Results. Journal of Tribology.
119(1), 179-187.
-
Ha, T. W., & Childs, D. W.
(1996).
A rotordynamic analysis of an annular honeycomb seal using a two-control volume model. 10(3), 332-340.
-
Marquette, O. R., & Childs, D. W.
(1996).
An extended three-control-volume theory for circumferentially-grooved liquid seals. Journal of Tribology.
118(2), 276-285.
-
Childs, D. W., & Gansle, A. J.
(1996).
Experimental leakage and rotordynamic results for helically grooved annular gas seals. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
118(2), 389-393.
-
Yang, Z., Andres, L. S., & Childs, D. W.
(1996).
Thermal effects in liquid oxygen hydrostatic journal bearings. Tribology Transactions.
39(3), 654-662.
-
SANANDRES, L., CHILDS, D., & YANG, Z.
(1995).
TURBULENT-FLOW HYDROSTATIC BEARINGS - ANALYSIS AND EXPERIMENTAL RESULTS. International Journal of Mechanical Sciences.
37(8), 815-829.
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ALEXANDER, C. R., CHILDS, D. W., & YANG, Z.
(1995).
THEORY VERSUS EXPERIMENT FOR THE ROTORDYNAMIC CHARACTERISTICS OF A SMOOTH ANNULAR GAS SEAL AT ECCENTRIC POSITIONS. Journal of Tribology.
117(1), 148-152.
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Franchek, N. M., Childs, D. W., & San Andres, L.
(1994).
Theoretical and experimental comparisons for rotordynamic coefficients of a high-speed, high-pressure, orifice-compensated hybrid bearing. American Society of Mechanical Engineers (Paper).
1-6.
-
Alexander, C. R., Childs, D. W., & Yang, Z.
(1994).
Theory versus experiment for the rotordynamic characteristics of a smooth annular gas seal at eccentric positions. American Society of Mechanical Engineers (Paper).
1-5.
-
Childs, D., & Hale, K.
(1994).
A Test Apparatus and Facility to Identify the Rotordynamic Coefficients of High-Speed Hydrostatic Bearings. Journal of Tribology.
116(2), 337-343.
-
HA, T. W., & CHILDS, D. W.
(1994).
ANNULAR HONEYCOMB-STATOR TURBULENT GAS SEAL ANALYSIS USING A NEW FRICTION-FACTOR MODEL-BASED ON FLAT-PLATE TESTS. Journal of Tribology.
116(2), 352-360.
-
YANG, Z., SANANDRES, L., & CHILDS, D. W.
(1994).
DYNAMIC FORCE PERFORMANCE OF ANNULAR GAS SEALS AT OFF-CENTER CONDITIONS. Tribology Transactions.
37(1), 33-42.
-
Zhou Yang, .., San Andres, L., & Childs, D. W.
(1994).
Dynamic force performance of annular gas seals at off-center conditions. Tribology Transactions.
37(1), 33-42.
-
FRANCHEK, N. M., & CHILDS, D. W.
(1994).
EXPERIMENTAL TEST-RESULTS FOR 4 HIGH-SPEED, HIGH-PRESSURE, ORIFICE-COMPENSATED HYBRID BEARINGS. Journal of Tribology.
116(1), 147-153.
-
CONNER, K. J., & CHILDS, D. W.
(1993).
ROTORDYNAMIC COEFFICIENT TEST-RESULTS FOR A 4-STAGE BRUSH SEAL. Journal of Propulsion and Power: devoted to aerospace propulsion and power.
9(3), 462-465.
-
YANG, Z., ANDRES, L. S., & CHILDS, D. W.
(1993).
THERMAL EFFECTS IN CRYOGENIC LIQUID ANNULAR SEALS .1. THEORY AND APPROXIMATE SOLUTION. Journal of Tribology.
115(2), 267-276.
-
ANDRES, L. S., YANG, Z., & CHILDS, D. W.
(1993).
THERMAL EFFECTS IN CRYOGENIC LIQUID ANNULAR SEALS .2. NUMERICAL-SOLUTION AND RESULTS. Journal of Tribology.
115(2), 277-284.
-
YANG, Z., ANDRES, L. S., & CHILDS, D. W.
(1993).
IMPORTANCE OF HEAT-TRANSFER FROM FLUID FILM TO STATOR IN TURBULENT-FLOW ANNULAR SEALS. Wear.
160(2), 269-277.
-
KURTIN, K. A., CHILDS, D., ANDRES, L. S., HALE, K., & SCHARRER, J. K.
(1993).
EXPERIMENTAL VERSUS THEORETICAL CHARACTERISTICS OF A HIGH-SPEED HYBRID (COMBINATION HYDROSTATIC AND HYDRODYNAMIC) BEARING. Journal of Tribology.
115(1), 160-169.
-
HA, T. W., MORRISON, G. L., & CHILDS, D. W.
(1992).
FRICTION-FACTOR CHARACTERISTICS FOR NARROW CHANNELS WITH HONEYCOMB SURFACES. Journal of Tribology.
114(4), 714-721.
-
HA, T. W., CHILDS, D. W., & SCHARRER, J. K.
(1992).
FRICTION-FACTOR DATA FOR FLAT-PLATE TESTS OF SMOOTH AND HONEYCOMB SURFACES. Journal of Tribology.
114(4), 722-730.
-
CHILDS, D. W.
(1992).
PRESSURE OSCILLATION IN THE LEAKAGE ANNULUS BETWEEN A SHROUDED IMPELLER AND ITS HOUSING DUE TO IMPELLER-DISCHARGE-PRESSURE DISTURBANCES. Journal of Fluids Engineering.
114(1), 61-67.
-
Ha, T. W., Morrison, G. L., & Childs, D. W.
(1992).
Friction-factor characteristics for narrow channels with honeycomb surfaces. Journal of Tribology.
114(4), 714-721.
-
Ha, T. W., & Childs, D. W.
(1992).
Friction-factor data for flat-plate tests of smooth and honeycomb surfaces. Journal of Tribology.
114(4), 722-730.
-
Childs, D. W.
(1992).
Pressure oscillation in the leakage annulus between a shrouded impeller and its housing due to impeller-discharge-pressure disturbances. Journal of Fluids Engineering.
114(1), 61-67.
-
CHILDS, D. W.
(1991).
CENTRIFUGAL-ACCELERATION MODES FOR INCOMPRESSIBLE FLUID IN THE LEAKAGE ANNULUS BETWEEN A SHROUDED PUMP IMPELLER AND ITS HOUSING. Journal of Vibration and Acoustics: Transactions of the ASME.
113(2), 209-218.
-
Childs, D. W., Baskharone, E., & Ramsey, C.
(1991).
Test results for rotordynamic coefficients of the SSME HPOTP turbine interstage seal with two swirl brakes. Journal of Tribology.
113(3), 577-583.
-
KILGORE, J. J., & CHILDS, D. W.
(1990).
ROTORDYNAMIC COEFFICIENTS AND LEAKAGE FLOW OF CIRCUMFERENTIALLY GROOVED LIQUID-SEALS. Journal of Fluids Engineering.
112(3), 250-256.
-
CHILDS, D. W., NOLAN, S. A., & KILGORE, J. J.
(1990).
ADDITIONAL TEST-RESULTS FOR ROUND-HOLE-PATTERN DAMPER SEALS - LEAKAGE, FRICTION FACTORS, AND ROTORDYNAMIC FORCE COEFFICIENTS. Journal of Tribology.
112(2), 365-371.
-
CHILDS, D. W., NOLAN, S. A., & KILGORE, J. J.
(1990).
TEST-RESULTS FOR TURBULENT ANNULAR SEALS, USING SMOOTH ROTORS AND HELICALLY GROOVED STATORS. Journal of Tribology.
112(2), 254-258.
-
CHILDS, D. W.
(1989).
FLUID-STRUCTURE INTERACTION FORCES AT PUMP-IMPELLER-SHROUD SURFACES FOR ROTORDYNAMIC CALCULATIONS. Journal of Vibration and Acoustics.
111(3), 216-225.
-
ELROD, D., NELSON, C., & CHILDS, D.
(1989).
AN ENTRANCE REGION FRICTION FACTOR MODEL APPLIED TO ANNULAR SEAL ANALYSIS - THEORY VERSUS EXPERIMENT FOR SMOOTH AND HONEYCOMB SEALS. Journal of Tribology.
111(2), 337-343.
-
Childs, D., Elrod, D., & Hale, K.
(1989).
Annular Honeycomb Seals: Test Results for Leakage and Rotordynamic Coefficients; Comparisons to Labyrinth and Smooth Configurations. Journal of Tribology.
111(2), 293-300.
-
Hawkins, L., Childs, D., & Hale, K.
(1989).
Experimental Results for Labyrinth Gas Seals With Honeycomb Stators: Comparisons to Smooth-Stator Seals and Theoretical Predictions. Journal of Tribology.
111(1), 161-168.
-
CHILDS, D. W., & SCHARRER, J. K.
(1988).
THEORY VERSUS EXPERIMENT FOR THE ROTORDYNAMIC COEFFICIENT OF LABYRINTH GAS SEALS .2. A COMPARISON TO EXPERIMENT. Journal of Vibration and Acoustics.
110(3), 281-287.
-
Elrod, D., Nelson, C., & Childs, D.
(1988).
An entrance region friction factor model applied to annular seal analysis: theory versus experiment for smooth and honeycomb seals
-
Childs, D., Elrod, D., & Hale, K.
(1988).
Annular honeycomb seals: test results for leakage and rotordynamic coefficients; comparisons to labyrinth and smooth configurations. Nippon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C.
-
Nolan, S., Nunez, D., & Childs, D. W.
(1988).
Clearance effects on leakage and rotordynamic coefficients of smooth, liquid annular seals
-
Hawkins, L., Childs, D., & Hale, K.
(1988).
Experimental results for labyrinth gas seals with honeycomb stators: comparisons to smooth-stator seals and theoretical predictions
-
KIM, C. H., & CHILDS, D. W.
(1987).
ANALYSIS FOR ROTORDYNAMIC COEFFICIENTS OF HELICALLY-GROOVED TURBULENT ANNULAR SEALS. Journal of Tribology.
109(1), 136-143.
-
Childs, D., & Garcia, F.
(1987).
Test Results for Sawtooth-Pattern Damper Seals: Leakage and Rotordynamic Coefficients. Journal of Tribology.
109(1), 124-128.
-
Childs, D., & Garcia, F.
(1987).
Test Results for Sawtooth-Pattern Damper Seals: Leakage and Rotordynamic Coefficients. Journal of Tribology.
109(1), 124-128.
-
Childs, D. W., & Scharrer, J. K.
(1986).
Experimental Rotordynamic Coefficient Results for Teeth-on-Rotor and Teeth-on-Stator Labyrinth Gas Seals. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
108(4), 599-604.
-
CHILDS, D. W., & KIM, C. H.
(1986).
TEST-RESULTS FOR ROUND-HOLE-PATTERN DAMPER SEALS - OPTIMUM CONFIGURATIONS AND DIMENSIONS FOR MAXIMUM NET DAMPING. Journal of Tribology.
108(4), 605-611.
-
CHILDS, D. W., NELSON, C. E., NICKS, C., SCHARRER, J., ELROD, D., & HALE, K.
(1986).
THEORY VERSUS EXPERIMENT FOR THE ROTORDYNAMIC COEFFICIENTS OF ANNULAR GAS SEALS .1. TEST FACILITY AND APPARATUS. Journal of Tribology.
108(3), 426-432.
-
NELSON, C. C., CHILDS, D. W., NICKS, C., & ELROD, D.
(1986).
THEORY VERSUS EXPERIMENT FOR THE ROTORDYNAMIC COEFFICIENTS OF ANNULAR GAS SEALS .2. CONSTANT-CLEARANCE AND CONVERGENT-TAPERED GEOMETRY. Journal of Tribology.
108(3), 433-438.
-
Childs, D. W., & Scharrer, J. K.
(1986).
An Iwatsubo-Based Solution for Labyrinth Seals: Comparison to Experimental Results. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
108(2), 325-331.
-
Childs, D. W., & Kim, C. H.
(1986).
Analysis for rotordynamic coefficients of helically-grooved turbulent annular seals
-
Childs, D. W., & Kim, C. H.
(1986).
Analysis for rotordynamic coefficients of helically-grooved turbulent annular seals. American Society of Mechanical Engineers (Paper).
-
Elrod, D. A., & Childs, D. W.
(1986).
Comparison of experimental and theoretical results for leakage, pressure gradients, and rotordynamic coefficients for tapered annular gas seal
-
CHILDS, D. W., & SCHARRER, J. K.
(1986).
EXPERIMENTAL ROTORDYNAMIC COEFFICIENT RESULTS FOR TEETH-ON-ROTOR AND TEETH-ON-STATOR LABYRINTH GAS SEALS. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
108(4), 599-604.
-
Childs, D. W.
(1986).
SSME seal test program: test results for saw-tooth pattern damper seal
-
Childs, D., & Garcia, F.
(1986).
Test results for sawtooth-pattern damper seals: leakage and rotordynamic coefficients
-
CHILDS, D. W., & KIM, C. H.
(1985).
ANALYSIS AND TESTING FOR ROTORDYNAMIC COEFFICIENTS OF TURBULENT ANNULAR SEALS WITH DIFFERENT, DIRECTIONALLY-HOMOGENEOUS SURFACE-ROUGHNESS TREATMENT FOR ROTOR AND STATOR ELEMENTS. Journal of Tribology.
107(3), 296-306.
-
CHILDS, D. W., & DRESSMAN, J. B.
(1985).
CONVERGENT-TAPERED ANNULAR SEALS - ANALYSIS AND TESTING FOR ROTORDYNAMIC COEFFICIENTS. Journal of Tribology.
107(3), 307-317.
-
CHILDS, D. W., & MOYER, D. S.
(1985).
VIBRATION CHARACTERISTICS OF THE HPOTP (HIGH-PRESSURE OXYGEN TURBOPUMP) OF THE SSME (SPACE-SHUTTLE MAIN ENGINE). Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
107(1), 152-159.
-
Childs, D. W., & Scharrer, J. K.
(1984).
An iwatsubo-based solution for labyrinth seals - comparison with experimental results
-
Childs, D. W., & Kim, C. H.
(1984).
Analysis and testing for rotordynamic coefficients of turbulent annular seals with different, directionally homogeneous surface-roughness treatment for rotor and stator elements
-
Childs, D. W., & Kim, C. H.
(1984).
Analysis and testing for rotordynamic coefficients of turbulent annular seals with different, directionally-homogeneous surface-roughness treatment for rotor and stator elements. American Society of Mechanical Engineers (Paper).
-
Childs, D. W., & Dressman, J. B.
(1984).
Convergent-tapered annular seals: analysis and testing for rotordynamic coefficients. American Society of Mechanical Engineers (Paper).
-
Childs, D. W.
(1984).
Finite-length solutions for the rotordynamic coefficients of constant-clearance and convergent-tapered annular seals
-
Childs, D. W., & Rhode, D. L.
(1984).
Rotordynamic forces developed by labyrinth seals
-
Ehrich, F., & Childs, D.
(1984).
SELF-EXCITED VIBRATION IN HIGH-PERFORMANCE TURBOMACHINERY. Mechanical engineering (New York, N.Y. : 1919).
106(5), 66-79.
-
CHILDS, D. W., & MOYER, D. S.
(1984).
VIBRATION CHARACTERISTICS OF THE HPOTP (HIGH-PRESSURE OXYGEN TURBOPUMP) OF THE SSME (SPACE-SHUTTLE MAIN ENGINE). Mechanical engineering (New York, N.Y. : 1919).
106(7), 85-85.
-
Childs, D. W., & Moyer, D. S.
(1984).
Vibration characteristics of the HPOTP (high-pressure oxygen turbopump) of the SSME (space shuttle main engine). American Society of Mechanical Engineers (Paper).
-
CHILDS, D. W.
(1983).
DYNAMIC ANALYSIS OF TURBULENT ANNULAR SEALS BASED ON HIRS LUBRICATION EQUATION. Journal of Lubrication Technology.
105(3), 429-436.
-
Childs, D. W.
(1983).
DYNAMIC ANALYSIS OF TURBULENT ANNULAR SEALS BASED ON HIRS' LUBRICATION EQUATION. Journal of Lubrication Technology.
105(3), 429-436.
-
Childs, D. W.
(1983).
FINITE-LENGTH SOLUTIONS FOR ROTORDYNAMIC COEFFICIENTS OF TURBULENT ANNULAR SEALS. Journal of Lubrication Technology.
105(3), 437-445.
-
CHILDS, D. W.
(1982).
FRACTIONAL-FREQUENCY ROTOR MOTION DUE TO NONSYMMETRIC CLEARANCE EFFECTS. J ENG POWER TRANS ASME.
104(3), 533-541.
-
CHILDS, D. W., & GRAVISS, K.
(1982).
A NOTE ON CRITICAL-SPEED SOLUTIONS FOR FINITE-ELEMENT-BASED ROTOR MODELS. 104(2), 412-415.
-
Childs, D. W., Nelson, C., Noyes, T., & Dressman, J. B.
(1982).
A high Reynolds-number seal test facility: facility description and preliminary test data
-
Childs, D. W., Nelson, C., Noyes, T., & Dressman, J. B.
(1982).
A high-Reynolds-number seal test facility; facility description and preliminary test data
-
Childs, D. W.
(1982).
Dynamic analysis of turbulent annular seals based on Hirs' lubrication equation. American Society of Mechanical Engineers (Paper).
-
Childs, D. W.
(1982).
Dynamic analysis of turbulent annular seals based on Hirs' lubrication equation. American Society of Mechanical Engineers (Paper).
-
CHILDS, D. W.
(1982).
FRACTIONAL-FREQUENCY ROTOR MOTION DUE TO NONSYMMETRIC CLEARANCE EFFECTS. J ENG POWER TRANS ASME.
V 104(N 3), 533-541.
-
Childs, D. W.
(1982).
Finite-length solutions for rotodynamic coefficients of turbulent annular seals. American Society of Mechanical Engineers (Paper).
-
Childs, D. W.
(1982).
Finite-length solutions for rotodynamic coefficients of turbulent annular seals. American Society of Mechanical Engineers (Paper).
-
Childs, D.
(1982).
ROTORDYNAMIC MOMENT COEFFICIENTS FOR FINITE-LENGTH TURBULENT SEALS. Energia Elettrica -Milan-.
59(10), 371-378.
-
Childs, D. W.
(1982).
Rotordynamic moment coefficients for finite-length turbulent seals
-
Childs, D. W., & Dressman, J. B.
(1982).
Testing of turbulent seals for rotordynamic coefficients
-
Childs, D. W., & Dressman, J. B.
(1982).
Testing of turbulent seals for rotordynamic coefficients
-
Childs, D. W.
(1981).
Convergent-tapered annular seals analysis for rotodynamic coefficients
-
Childs, D. W.
(1981).
Convergent-tapered annular seals: analysis for rotordynamic coefficients
-
Childs, D. W.
(1981).
FRACTIONAL-FREQUENCY ROTOR MOTION DUE TO NONSYMMETRIC CLEARANCE EFFECTS. American Society of Mechanical Engineers (Paper).
-
Childs, S. B., Childs, D. W., & Dressman, J.
(1980).
ESTIMATION OF SEAL BEARING STIFFNESS AND DAMPING PARAMETERS FROM EXPERIMENTAL DATA. 175-179.
-
Childs, S. B., Childs, D. W., & Dresden, J.
(1980).
Estimation of seal bearing stiffness and damping parameters from experimental data
-
Childs, D. W., Dressman, J. B., & Childs, S. B.
(1980).
Testing of turbulent seals for rotor dynamic coefficients
-
Childs, D. W., Dressman, J. B., & Childs, S. B.
(1980).
Testing of turbulent seals for rotordynamic coefficients
-
Childs, D. W.
(1979).
Rub-Induced Parametric Excitation in Rotors. Journal of Mechanical Design.
101(4), 640-644.
-
Childs, D. W.
(1979).
Rub-Induced Parametric Excitation in Rotors. 101(4), 640-644.
-
Childs, D. W., & Bates, J. B.
(1978).
Residual-Flexibility Corrections for Transient Modal Rotordynamic Models. Journal of Mechanical Design.
100(2), 251-256.
-
Childs, D. W., & Bates, J. B.
(1978).
Residual-Flexibility Corrections for Transient Modal Rotordynamic Models. 100(2), 251-256.
-
Childs, D. W.
(1978).
The Space Shuttle Main Engine High-Pressure Fuel Turbopump Rotordynamic Instability Problem. J ENG POWER TRANS ASME.
100(1), 48-57.
-
Childs, D. W.
(1978).
The Space Shuttle Main Engine High-Pressure Fuel Turbopump Rotordynamic Instability Problem. J ENG POWER TRANS ASME.
100(1), 48-57.
-
Childs, D. W.
(1978).
The Space Shuttle main engine high pressure fuel turbopump rotordynamic instability problem
-
Childs, D. W., & Bates, J. B.
(1977).
RESIDUAL-FLEXIBILITY CORRECTIONS FOR TRANSIENT MODAL ROTORDYNAMIC MODELS. American Society of Mechanical Engineers (Paper).
-
Childs, D. W.
(1977).
SPACE SHUTTLE MAIN ENGINE HIGH-PRESSURE FUEL TURBOPUMP ROTORDYNAMIC INSTABILITY PROBLEM. American Society of Mechanical Engineers (Paper).
-
Childs, D., Moes, H., & van Leeuwen, H.
(1977).
JOURNAL BEARING IMPEDANCE DESCRIPTIONS FOR ROTORDYNAMIC APPLICATIONS. 99 Ser F(2),
-
Childs, D., Moes, H., & van Leuwen, H.
(1976).
JOURNAL BEARING IMPEDANCE DESCRIPTIONS FOR ROTORDYNAMIC APPLICATIONS
-
Childs, D. W.
(1976).
A Modal Transient Rotordynamic Model for Dual-Rotor Jet Engine Systems. Journal of Manufacturing Science and Engineering.
98(3), 876-882.
-
Childs, D. W.
(1976).
A Modal Transient Simulation Model for Flexible Asymmetric Rotors. Journal of Manufacturing Science and Engineering.
98(1), 312-319.
-
Childs, D., Moes, H., & van Leeuwen, H.
(1976).
Journal bearing impedance descriptions for rotodynamic applications
-
Childs, D. W.
(1975).
Two Jeffcott-Based Modal Simulation Models for Flexible Rotating Equipment. Journal of Manufacturing Science and Engineering.
97(3), 1000-1014.
-
Childs, D. W.
(1975).
Two Jeffcott-Based Modal Simulation Models for Flexible Rotating Equipment. Journal of Manufacturing Science and Engineering.
97(3), 1000-1014.
-
Childs, D. W.
(1975).
MODAL TRANSIENT ROTORDYNAMIC MODEL FOR DUAL-ROTOR JET ENGINE SYSTEMS. American Society of Mechanical Engineers (Paper).
-
Childs, D. W.
(1975).
MODAL TRANSIENT SIMULATION MODEL FOR FLEXIBLE ASYMMETRIC ROTORS. American Society of Mechanical Engineers (Paper).
-
CHILDS, D. W.
(1975).
TRANSIENT ROTORDYNAMIC ANALYSIS FOR THE SPACE-SHUTTLE MAIN ENGINE HIGH-PRESSURE OXYGEN TURBOPUMP. 12(1),
-
Childs, D. W.
(1974).
A Rotor-Fixed Modal Simulation Model for Flexible Rotating Equipment. Journal of Manufacturing Science and Engineering.
96(2), 659-669.
-
CHILDS, D. W., & HARDISON, T. L.
(1974).
A Movable-Mass Attitude Stabilization System For Cable-Connected Artificial-^ Space Stations. Journal of Spacecraft and Rockets.
11(3), 165-172.
-
CHILDS, D. W.
(1974).
TRANSIENT ROTORDYNAMIC ANALYSIS FOR THE SPACE-SHUTTLE MAIN ENGINE HIGH-PRESSURE OXYGEN TURBOPUMP
-
Childs, D. W.
(1973).
ROTOR-FIXED MODAL SIMULATION MODEL FOR FLEXIBLE ROTATING EQUIPMENT. American Society of Mechanical Engineers (Paper).
-
CHILDS, D. W.
(1973).
A ROTOR-FIXED MODAL SIMULATION MODEL FOR FLEXIBLE ROTATING EQUIPMENT
-
Childs, D., Moes, H., & van Leeuwen, H.
Journal bearing impedance descriptions for rotodynamic applications. 99(2 , Apr. 1977), 198-214.
-
Zhang, M., Childs, D. W., Tran, D. L., & Shresth, H.
(2020).
Effects of Clearance on the Performance of a Labyrinth Seal Under Wet-Gas Conditions. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
142(11),
-
conference paper
-
Shrestha, H., Childs, D. W., Tran, D. L., & Zhang, M.
(2019).
EXPERIMENTAL STUDY OF THE STATIC AND DYNAMIC CHARACTERISTICS OF A LONG (L/D=0.75) LABYRINTH ANNULAR SEAL OPERATING UNDER TWO-PHASE (LIQUID/GAS) CONDITIONS. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
-
Tran, D. L., Childs, D. W., Shrestha, H., & Zhang, M.
(2019).
PRESWIRL AND MIXED-FLOW (MAINLY-LIQUID) EFFECTS ON ROTORDYNAMIC PERFORMANCE OF A LONG (L/D=0.75) SMOOTH SEAL. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
-
Balke, N. E., & Childs, D. W.
(2019).
COMPARISON OF A LIQUID ANNULAR SEAL FOR PUMP APPLICATIONS WITH AND WITHOUT A SWIRL BRAKE
-
Zhang, M., & Childs, D. W.
(2019).
A STUDY FOR ROTORDYNAMIC AND LEAKAGE CHARACTERISTICS OF A LONG-HONEYCOMB SEAL WITH TWO-PHASE, MAINLY AIR MIXTURES. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
-
Zhang, M., Childs, D. W., Tran, D. L., & Shrestha, H.
(2019).
A STUDY ON THE LEAKAGE AND ROTORDYNAMIC COEFFICIENTS OF A LONG-SMOOTH SEAL WITH LAMINAR-TWO-PHASE, MAINLY-OIL MIXTURES. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
-
Childs, D. W., & Mertz, D.
(2016).
COMPARATIVE LIFT-OFF PERFORMANCE IN FLEXURE PIVOT PAD AND HYBRID (HYDROSTATIC AND HYDRODYNAMIC) BEARINGS WITH WATER AS THE TEST FLUID. v07bt31a002-v07bt31a002.
-
Arthur, S. P., & Childs, D. W.
(2015).
MEASURED ROTORDYNAMIC AND LEAKAGE CHARACTERISTICS OF A TOOTH-ON-ROTOR LABYRINTH SEAL WITH COMPARISONS TO A TOOTH-ON-STATOR LABYRINTH SEAL AND PREDICTIONS. v07at31a016-v07at31a016.
-
Muhammed, A., & Childs, D. W.
(2015).
Vibration Modeling and Experimental Results of Two Phase Flow Twin-Screw Pump. v07at30a016-v07at30a016.
-
Khatri, R., & Childs, D. W.
(2014).
An Experimental Investigation of the Dynamic Performance of a Vertical-Application Three-Lobe Bearing. v07bt32a007-v07bt32a007.
-
Khatri, R., & Childs, D. W.
(2014).
An Experimental Study of the Load-Orientation Sensitivity of Three-Lobe Bearings. v07bt32a006-v07bt32a006.
-
Childs, D. W., Mclean, J., Zhang, M., & Arthurl, S. P.
(2014).
ROTORDYNAMIC PERFORMANCE OF A NEGATIVE-SWIRL BRAKE FOR A TOOTH-ON-STATOR LABYRINTH SEAL. v07at31a011-v07at31a011.
-
Tschoepe, D. P., & Childs, D. W.
(2013).
MEASUREMENTS VERSUS PREDICTIONS FOR THE STATIC AND DYNAMIC CHARACTERISTICS OF A FOUR-PAD, ROCKER-PIVOT, TILTING-PAD JOURNAL BEARING. v07at29a008-v07at29a008.
-
Childs, D. W., & Muhammed, A.
(2013).
COMMENTS ON A NEWLY-IDENTIFIED DESTABILIZING ROTORDYNAMIC MECHANISM ARISING IN VERTICAL HYDRAULIC TURBINES AND THE BACK SHROUDS OF CENTRIFUGAL IMPELLERS. v07at29a004-v07at29a004.
-
Mehta, N. J., & Childs, D. W.
(2013).
MEASURED COMPARISON OF LEAKAGE AND ROTORDYNAMIC CHARACTERISTICS FOR A SLANTED-TOOTH AND A STRAIGHT-TOOTH LABYRINTH SEAL. v07bt30a001-v07bt30a001.
-
Childs, D. W., & Arthur, S. P.
(2013).
STATIC DESTABILIZING BEHAVIOR FOR GAS ANNULAR SEALS AT HIGH ECCENTRICITY RATIOS. v07at29a003-v07at29a003.
-
Childs, D. W., Arthur, S., & Mehta, N. J.
(2013).
THE IMPACT OF HOLE DEPTH ON THE ROTORDYNAMIC AND LEAKAGE CHARACTERISTICS OF HOLE-PATTERN-STATOR GAS ANNULAR SEALS. v07at29a009-v07at29a009.
-
Brown, P. D., & Childs, D. W.
(2012).
MEASUREMENT VERSUS PREDICTIONS OF ROTORDYNAMIC COEFFICIENTS OF A HOLE-PATTERN GAS SEAL WITH NEGATIVE PRESWIRL. 2155-+.
-
Wilkes, J. C., & Childs, D. W.
(2012).
IMPROVING TILTING-PAD JOURNAL BEARING PREDICTIONS: PART I - MODEL DEVELOPMENT AND IMPACT OF ROTOR-EXCITED VERSUS BEARING-EXCITED IMPEDANCE COEFFICIENTS. 965-+.
-
Wilkes, J. C., & Childs, D. W.
(2012).
IMPROVING TILTING-PAD JOURNAL BEARING PREDICTIONS: PART II - COMPARISON OF MEASURED AND PREDICTED ROTOR-PAD TRANSFER FUNCTIONS FOR A ROCKER-PIVOT TILTING-PAD JOURNAL BEARING. 979-+.
-
Avendano, R. D., & Childs, D. W.
(2012).
ONE EXPLANATION FOR 2N RESPONSE DUE TO MISALIGNMENT IN ROTORS CONNECTED BY FLEXIBLE COUPLINGS. 563-+.
-
Muhammed, A., & Childs, D. W.
(2012).
ROTORDYNAMICS OF A 2-PHASE FLOW TWIN SCREW PUMP. 711-720.
-
Agnew, J., & Childs, D.
(2012).
Rotordynamic Characteristics of a Flexure Pivot Pad Bearing With an Active and Locked Integral Squeeze Film Damper. 551-561.
-
Vannarsdall, M., & Childs, D. W.
(2012).
STATIC AND ROTORDYNAMIC CHARACTERISTICS FOR A NEW HOLE-PATTERN ANNULAR GAS SEAL DESIGN INCORPORATING LARGER DIAMETER HOLES. 759-+.
-
Wilkes, J. C., & Childs, D. W.
(2012).
TILTING PAD JOURNAL BEARINGS - A DISCUSSION ON STABILITY CALCULATION, FREQUENCY DEPENDENCE, AND PAD AND PIVOT FLEXIBILITY. 991-+.
-
Childs, D. W., & Saha, R.
(2012).
A NEW, ITERATIVE, SYNCHRONOUS-RESPONSE ALGORITHM FOR ANALYZING THE MORTON EFFECT. 271-281.
-
Childs, D. W., & Kumar, D.
(2012).
DRY-FRICTION WHIP AND WHIRL PREDICTIONS FOR A ROTOR-STATOR MODEL WITH RUBBING CONTACT AT TWO LOCATIONS. 207-218.
-
Asirvatham, T. D., Childs, D. W., & Phillips, S.
(2012).
FRICTION FACTOR BEHAVIOR FROM FLAT-PLATE TESTS OF 12.15 mm DIAMETER HOLE-PATTERN ROUGHENED SURFACES. 247-255.
-
Kulhanek, C. D., & Childs, D. W.
(2012).
MEASURED STATIC AND ROTORDYNAMIC COEFFICIENT RESULTS FOR A ROCKER-PIVOT, TILTING-PAD BEARING WITH 50 AND 60% OFFSETS. 237-246.
-
Childs, D. W., Kheireddin, B., & Phillips, S.
(2010).
FRICTION FACTOR BEHAVIOR FROM FLAT-PLATE TESTS OF SMOOTH AND HOLE-PATTERN ROUGHENED SURFACES WITH SUPPLY PRESSURES UP TO 84 BARS. 69-79.
-
Vannini, G., Thorat, M. R., Childs, D. W., & Libraschi, M.
(2010).
Impact of Frequency Dependence of Gas Labyrinth Seal Rotordynamic Coefficients on Centrifugal Compressor Stability. 1-10.
-
Bhattacharya, A., & Childs, D. W.
(2009).
Dry-Friction Whirl and Whip Between a Rotor and a Stator: Effect of Rotor-Stator Coupling Due to Seals and Rotor Rigid-Body Dynamics. 963-972.
-
Keith, G. M., Bhattacharjee, P., Nielsen, K. K., Ha, T. W., Childs, D. W., & Platt, J. P.
(2009).
Friction Factor Jump in Honeycomb Seals Explained by Flow-Acoustic Interactions. 1073-1080.
-
Thorat, M. R., & Childs, D. W.
(2009).
PREDICTED ROTORDYNAMIC BEHAVIOR OF A LABYRINTH SEAL AS ROTOR SURFACE SPEED APPROACHES MACH 1. 699-709.
-
Childs, D. W., & Carter, C. R.
(2009).
ROTORDYNAMIC CHARACTERISTICS OF A 5 PAD, ROCKER-PIVOT, TILTING PAD BEARING IN A LOAD-ON-PAD CONFIGURATION; COMPARISONS TO PREDICTIONS AND LOAD-BETWEEN-PAD RESULTS. 867-880.
-
Wilkes, J. C., Dyck, B. J., Childs, D. W., & Phillips, S. G.
(2009).
THE NUMERICAL AND EXPERIMENTAL CHARACTERISTICS OF MULTI-MODE DRY-FRICTION WHIP AND WHIRL. 785-794.
-
van der Velde, D. E., & Childs, D. W.
(2008).
MEASUREMENTS VERSUS PREDICTIONS FOR ROTORDYNAMIC AND LEAKAGE CHARACTERISTICS OF A CONVERGENT-TAPERED, HONEYCOMB-STATOR/SMOOTH-ROTOR ANNULAR GAS SEAL. 883-889.
-
Carter, C. R., & Childs, D. W.
(2008).
MEASUREMENTS VERSUS PREDICTIONS FOR THE ROTORDYNAMIC CHARACTERISTICS OF A 5-PAD, ROCKER-PIVOT, TILTING-PAD BEARING IN LOAD BETWEEN PAD CONFIGURATION. 891-901.
-
Hensley, J. E., & Childs, D.
(2008).
Measurements Versus Predictions for Rotordynamic Characteristics of a Flexure Pivot-Pad Tilting Pad Bearing in an LBP Condition at Higher Unit Loads. 873-881.
-
Harris, J., & Childs, D.
(2008).
Static Performance Characteristics and Rotordynamic Coefficients for a Four-Pad Ball-in-Socket Tilting Pad Journal Bearing. 861-871.
-
Childs, D., Schaible, A., & Jughaiman, B. A.
(2008).
Static and Dynamic Performance of Pressure Dam Bearings With Dam Steps That Are (I) Square and (II) Filleted. 931-939.
-
Childs, D. W., & Hattacharya, A.
(2007).
Prediction of dry-friction whirl and whip between a rotor and a stator. Journal of Vibration and Acoustics: Transactions of the ASME.
355-362.
-
Sz., J. K., Childs, D., Rodriguez, M., & Garcia, J. C.
(2007).
Investigation Into a Steam Whirl Which Affected HP Rotors of 300 MW Steam Turbines. 291-298.
-
Gupta, M. K., Soulas, T. A., & Childs, D. W.
(2007).
New Steps to Improve Rotordynamic Stability Predictions of Centrifugal Compressors. 843-848.
-
Al-Jughaiman, B., & Childs, D.
(2007).
Static and Dynamic Characteristics for a Pressure-Dam Bearing. 859-867.
-
Shin, Y., & Childs, D. W.
(2007).
The Influence of Real Gas Properties on Predictions of Static and Rotordynamic Properties of Annular Seals for Injection Compressors. 791-798.
-
Zutavern, Z. S., & Childs, D. W.
(2007).
Identification of Rotordynamic Forces in a Flexible Rotor System Using Magnetic Bearings. 895-902.
-
Childs, D. W., Graviss, M., & Rodriguez, L. E.
(2006).
The influence of groove size on the static and rotordynamic characteristics of short, laminar-flow annular seals
-
Childs, D. W., & Shin, Y.
(2006).
A design to increase the static stiffness of hole pattern stator gas seals. 1279-1284.
-
Gupta, M. K., & Childs, D. W.
(2006).
Rotordynamic Stability Predictions for Centrifugal Compressors Using a Bulk-Flow Model to Predict Impeller Shroud Force and Moment Coefficients. 1211-1223.
-
Villasmil, L. A., Childs, D. W., & Chen, H. C.
(2006).
Understanding friction factor behavior in liquid annular seals with deliberately roughened surfaces, roughness geometric characteristics defining flow resistance. 1571-1579.
-
Childs, D. W., Shin, Y., & Seifert, B.
(2006).
A design to improve the effective damping characteristics of hole-pattern-stator annular gas seals. 1271-1277.
-
Al-Ghasem, A., & Childs, D.
(2005).
Rotordynamic Coefficients Measurements Versus Predictions for a High Speed Flexure-Pivot Tilting-Pad Bearing (Load-Between-Pad Configuration). 725-736.
-
Zutavern, Z. S., & Childs, D. W.
(2005).
Fiber-optic strain gauge calibration and dynamic flexibility transfer function identification in magnetic bearings. 757-762.
-
Villasmil, L. A., Childs, D. W., & Chen, H. C.
(2005).
Understanding friction factor behavior in liquid annular seals with deliberately roughened surfaces. Journal of Tribology.
213-222.
-
Sprowl, T. B., Childs, D. W., & Jordan, L. T.
(2004).
A study of the effects of inlet preswirl on the dynamic coefficients of a straight-bore honeycomb gas damper seal. 619-629.
-
Smalley, A. J., Childs, D. W., Vannini, G., Camatti, M., Hollingsworth, J. R., & Carter, J. J.
(2004).
Dynamic characteristics of the diverging taper honeycomb-stator seal. 749-756.
-
Rodriguez, L. E., & Childs, D. W.
(2004).
Experimental rotordynamic coefficient results for a load-on-pad flexible-pivot tilting-pad bearing with comparisons to predictions from bulk-flow and reynolds equation models. 529-537.
-
Picardo, A., Childs, D. W., & Jordan, L. T.
(2004).
Rotordynamic coefficients for a tooth-on-stator labyrinth seal at 70 bar supply pressures -measurements versus theory and comparisons to a hole-pattern stator seal. 607-618.
-
Villasmil, L. A., Chen, H. C., & Childs, D. W.
(2003).
Evaluation of near-wall turbulence models for liquid annular seals with roughened walls
-
Childs, D. W., & Siddiqui, N. A.
(2001).
Rotordynamics involving axial rubbing against a disk. 705-710.
-
Childs, D. W., & Jordan, L. T.
(2001).
The multiple contributions of Jorgen Lund's Ph.D. dissertation, "self-excited, stationary whirl orbits of a journal in sleeve bearings," RPI, 1966, engineering mechanics. 589-593.
-
Childs, D. W.
(2001).
Twice-running-speed response due to elliptical bearing clearances. 699-704.
-
Fayolle, P., & Childs, D. W.
(1998).
Rotordynamic evaluation of a roughened-land hybrid bearing. American Society of Mechanical Engineers (Paper).
1-6.
-
Childs, D. W., & Fayolle, P.
(1998).
Test results for liquid `damper' seals using a round-hole roughness pattern for the stators. American Society of Mechanical Engineers (Paper).
1-9.
-
Yu, Z., & Childs, D. W.
(1997).
A Comparison of Experimental Rotordynamic Coefficients and Leakage Characteristics Between Hole-Pattern Gas Damper Seals and a Honeycomb Seal. American Society of Mechanical Engineers (Paper).
v004t14a001-v004t14a001.
-
Kleynhans, G., & Childs, D.
(1997).
Acoustic influence of cell depth on the rotordynamic characteristics of smooth-rotor/honeycomb-stator annular gas seals. NASA Conference Publication.
49-76.
-
SanAndres, L., & Childs, D.
(1997).
Angled injection - Hydrostatic bearings analysis and comparison to test results. Journal of Tribology.
179-187.
-
Yu, Z., & Childs, D.
(1997).
Comparison of experimental rotordynamic coefficients and leakage characteristics between hole-pattern gas damper seals and a honeycomb seal. NASA Conference Publication.
77-93.
-
Marquette, O. R., Childs, D. W., & Phillips, S. G.
(1997).
Theory versus experiment for leakage and rotordynamic coefficients of circumferentially-grooved liquid annular seals with L/D of 0.45
-
Marquette, O. R., Childs, D. W., & San Andres, L.
(1996).
Eccentricity effects on the rotordynamic coefficients of plain annular seals: Theory versus experiment. American Society of Mechanical Engineers (Paper).
-
Kleynhans, G. F., & Childs, D. W.
(1996).
Acoustic influence of cell depth on the rotordynamic characteristics of smooth-rotor/honeycomb-stator annular gas seals. American Society of Mechanical Engineers (Paper).
-
Lindsey, W. T., & Childs, D. W.
(1995).
Effects of converging and diverging axial taper on the rotordynamic coefficients of liquid annular pressure seals: theory versus experiment. 1139-1147.
-
Marquette, O. R., & Childs, D. W.
(1995).
Extended three-control-volume theory for circumferentially-grooved liquid seals. American Society of Mechanical Engineers (Paper).
-
Mosher, P., & Childs, D. W.
(1995).
Theory versus experiment for the effects of pressure ratio on the performance of an orifice-compensated hybrid bearing. 1119-1129.
-
Childs, D. W., & Gansle, A. J.
(1995).
Experimental Leakage and Rotordynamic Results for Helically Grooved Annular Gas Seals. American Society of Mechanical Engineers (Paper).
v005t14a009-v005t14a009.
-
FRANCHEK, N. M., CHILDS, D. W., & ANDRES, L. S.
(1995).
THEORETICAL AND EXPERIMENTAL COMPARISONS FOR ROTORDYNAMIC COEFFICIENTS OF A HIGH-SPEED, HIGH-PRESSURE, ORIFICE-COMPENSATED HYBRID BEARING. Journal of Tribology.
285-290.
-
Elrod, D. A., Pelletti, J. M., & Childs, D. W.
(1995).
Theory versus experiment for the rotordynamic coefficients of an interlocking labyrinth gas seal. American Society of Mechanical Engineers (Paper).
-
Hendricks, R. C., Liang, A. D., Childs, D. W., & Proctor, M. P.
(1992).
Development of Advanced Seals for Space Propulsion Turbomachinery. SAE Technical Papers.
-
Yang, Z., San Andres, L., & Childs, D. W.
(1992).
Thermal effects in cryogenic liquid annular seals. Part I. Theory and approximate solution. American Society of Mechanical Engineers (Paper).
1-10.
-
San Andres, L., Yang, Z., & Childs, D. W.
(1992).
Thermal effects in cryogenic liquid annular seals. Part II. Numerical solution and results. American Society of Mechanical Engineers (Paper).
1-8.
-
Kurtin, K. A., Childs, D., San Andres, L., & Hale, K.
(1991).
Experimental versus theoretical characteristics of a high-speed hybrid (combination hydrostatic and hydrodynamic) bearing. American Society of Mechanical Engineers (Paper).
1-9.
-
Ha, T. W., Morrison, G. L., & Childs, D. W.
(1991).
Friction-factor characteristics for narrow channels with honeycomb surfaces. American Society of Mechanical Engineers (Paper).
1-8.
-
Ha, T. W., & Childs, D. W.
(1991).
Friction-factor data for flat-plate tests of smooth and honeycomb surfaces. American Society of Mechanical Engineers (Paper).
1-8.
-
CHILDS, D. W., BASKHARONE, E., & RAMSEY, C.
(1991).
TEST-RESULTS FOR ROTORDYNAMIC COEFFICIENTS OF THE SSME HPOTP TURBINE INTERSTAGE SEAL WITH 2 SWIRL BRAKES. Journal of Tribology.
577-583.
-
CHILDS, D. W., & RAMSEY, C.
(1991).
SEAL-ROTORDYNAMIC-COEFFICIENT TEST-RESULTS FOR A MODEL SSME ATD-HPFTP TURBINE INTERSTAGE SEAL WITH AND WITHOUT A SWIRL BRAKE. Journal of Tribology.
198-203.
-
ELROD, D. A., CHILDS, D. W., & NELSON, C. C.
(1990).
AN ANNULAR GAS SEAL ANALYSIS USING EMPIRICAL ENTRANCE AND EXIT REGION FRICTION FACTORS. Journal of Tribology.
196-204.
-
Childs, D. W., Nolan, S. A., & Kilgore, J. J.
(1990).
Additional Test Results for Round-Hole-Pattern Damper Seals: Leakage, Friction Factors, and Rotordynamic Force Coefficients. Journal of Tribology.
365-371.
-
Childs, D. W., Nolan, S. A., & Kilgore, J. J.
(1990).
Test Results for Turbulent Annular Seals, Using Smooth Rotors and Helically Grooved Stators. Journal of Tribology.
254-258.
-
Elrod, D. A., Childs, D. W., & Nelson, C. C.
(1989).
Annular gas seal analysis using empirical entrance and exit region friction factors. American Society of Mechanical Engineers (Paper).
-
Williams, J. P., & Childs, D. W.
(1989).
Influence of impeller shroud forces on turbopump rotor dynamics. 41-49.
-
Kilgore, J. J., & Childs, D. W.
(1989).
Rotordynamic coefficients and leakage flow of circumferentially-grooved liquid-seals. 195-203.
-
Childs, D., Elrod, D., & Hale, K.
(1988).
Annular honeycomb seals: Test results for leakage and rotordynamic coefficients; comparisons to labyrinth and smooth configurations. American Society of Mechanical Engineers (Paper).
-
Elrod, D., Nelson, C., & Childs, D.
(1988).
Entrance region friction factor model applied to annular seal analysis: Theory versus experiment for smooth and honeycomb seals. American Society of Mechanical Engineers (Paper).
-
Hawkins, L., Childs, D., & Hale, K.
(1988).
Experimental results for labyrinth gas seals with honeycomb stators: Comparisons to smooth-stator seals and theoretical predictions. American Society of Mechanical Engineers (Paper).
-
Childs, D. W., Elrod, D. A., & Hale, K.
(1988).
ROTORDYNAMIC COEFFICIENT AND LEAKAGE TEST RESULTS FOR INTERLOCK AND TOOTH-ON-STATOR LABYRINTH SEALS. American Society of Mechanical Engineers (Paper).
-
Childs, D. W.
(1987).
FLUID-STRUCTURE INTERACTION FORCES AT PUMP-IMPELLER-SHROUD SURFACES FOR ROTORDYNAMIC CALCULATIONS. 581-594.
-
Childs, D. W., & Scharrer, J. K.
(1987).
THEORY VERSUS EXPERIMENT FOR THE ROTORDYNAMIC COEFFICIENTS OF LABYRINTH GAS SEALS: PART II - A COMPARISON TO EXPERIMENT. 427-434.
-
Kim, C. H., & Childs, D. W.
(1986).
ANALYSIS FOR ROTORDYNAMIC COEFFICIENTS OF HELICALLY-GROOVED TURBULENT ANNULAR SEALS. American Society of Mechanical Engineers (Paper).
-
Childs, D. W., & Scharrer, J. K.
(1986).
EXPERIMENTAL ROTORDYNAMIC COEFFICIENT RESULTS FOR TEETH-ON-ROTOR AND TEETH-ON-STATOR LABYRINTH GAS SEALS. NASA Conference Publication.
259-275.
-
Childs, D. W.
(1986).
FORCE AND MOMENT ROTORDYNAMIC COEFFICIENTS FOR PUMP-IMPELLER SHROUD SURFACES. NASA Conference Publication.
503-529.
-
Childs, D., & Garcia, F.
(1986).
TEST RESULTS FOR SAWTOOTH-PATTERN DAMPER SEALS: LEAKAGE AND ROTORDYNAMIC COEFFICIENTS. American Society of Mechanical Engineers (Paper).
-
CHILDS, D. W., & SCHARRER, J. K.
(1986).
AN IWATSUBO-BASED SOLUTION FOR LABYRINTH SEALS - COMPARISON TO EXPERIMENTAL RESULTS. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
325-331.
-
Childs, D. W., & Moyer, D. S.
(1985).
SAMPLE ROTORDYNAMIC CALCULATIONS USING CAL-TECH ROTORDYNAMIC COEFFICIENTS. 29-32.
-
Childs, D. W., & Moyer, D. S.
(1985).
VIBRATION CHARACTERISTICS OF THE HPOTP (HIGH PRESSURE OXYGEN TURBOPUMP) OF THE SSME (SPACE SHUTTLE MAIN ENGINE). NASA Conference Publication.
452-481.
-
Childs, D. W., & Kim, C. H.
(1984).
ANALYSIS AND TESTING FOR ROTORDYNAMIC COEFFICIENTS OF TURBULENT ANNULAR SEALS WITH DIFFERENT, DIRECTIONALLY HOMOGENEOUS SURFACE-ROUGHNESS TREATMENT FOR ROTOR AND STATOR ELEMENTS. NASA Conference Publication.
313-340.
-
Childs, D. W., & Kim, C. H.
(1984).
ANALYSIS AND TESTING FOR ROTORDYNAMIC COEFFICIENTS OF TURBULENT ANNULAR SEALS WITH DIFFERENT, DIRECTIONALLY-HOMOGENEOUS SURFACE-ROUGHNESS TREATMENT FOR ROTOR AND STATOR ELEMENTS. American Society of Mechanical Engineers (Paper).
-
Childs, D. W., & Dressman, J. B.
(1984).
CONVERGENT-TAPERED ANNULAR SEALS: ANALYSIS AND TESTING FOR ROTORDYNAMIC COEFFICIENTS. American Society of Mechanical Engineers (Paper).
-
Childs, D. W.
(1984).
FINITE-LENGTH SOLUTIONS FOR THE ROTORDYNAMIC COEFFICIENTS OF CONSTANT-CLEARANCE AND CONVERGENT-TAPERED ANNULAR SEALS. I Mech E Conference Publications (Institution of Mechanical Engineers).
223-231.
-
Childs, D. W., & Scharrer, J. K.
(1984).
IWATSUBO-BASED SOLUTION FOR LABYRINTH SEALS - COMPARISON WITH EXPERIMENTAL RESULTS. NASA Conference Publication.
257-279.
-
Childs, D. W., & Moyer, D. S.
(1984).
VIBRATION CHARACTERISTICS OF THE HPOTP (HIGH-PRESSURE OXYGEN TURBOPUMP) OF THE SSME (SPACE SHUTTLE MAIN ENGINE). American Society of Mechanical Engineers (Paper).
-
Childs, D. W., & Moyer, D. S.
(1984).
VIBRATION CHARACTERISTICS OF THE HPOTP (HIGH-PRESSURE OXYGEN TURBOPUMP) OF THE SSME (SPACE SHUTTLE MAIN ENGINE). American Society of Mechanical Engineers (Paper).
-
Childs, D. W., & Dressman, J. B.
(1983).
TESTING OF TURBULENT SEALS FOR ROTOR DYNAMIC COEFFICIENTS
-
CHILDS, D. W.
(1983).
FINITE-LENGTH SOLUTIONS FOR ROTORDYNAMIC COEFFICIENTS OF TURBULENT ANNULAR SEALS. Journal of Lubrication Technology.
437-445.
-
Childs, D. W.
(1982).
DYNAMIC ANALYSIS OF TURBULENT ANNULAR SEALS BASED ON HIRS LUBRICATION EQUATION. American Society of Mechanical Engineers (Paper).
-
Childs, D. W., Nelson, C., Noyes, T., & Dressman, J. B.
(1982).
HIGH-REYNOLDS-NUMBER SEAL TEST FACILITY: FACILITY DESCRIPTION AND PRELIMINARY TEST DATA. NASA Conference Publication.
172-186.
-
Childs, D. W., & Dressman, J. B.
(1982).
TESTING OF TURBULENT SEALS FOR ROTORDYNAMIC COEFFICIENTS. NASA Conference Publication.
157-171.
-
Childs, D. W.
(1981).
CONVERGENT-TAPERED ANNULAR SEALS: ANALYSIS FOR ROTORDYNAMIC COEFFICIENTS. 35-44.
-
Shrestha, H., Childs, D. W., Tran, D. L., & Zhang, M.
(2019).
EXPERIMENTAL STUDY OF THE STATIC AND DYNAMIC CHARACTERISTICS OF A LONG (L/D=0.75) LABYRINTH ANNULAR SEAL OPERATING UNDER TWO-PHASE (LIQUID/GAS) CONDITIONS. Journal of Engineering for Gas Turbines and Power: Transactions of the ASME.
-
patent
-
Childs, D.
(2015).
Annular seals for non-contact sealing of fluids in turbomachinery
-
Childs, D.
(2014).
Annular seals for non-contact sealing of fluids in turbomachinery
-
Childs, D.
(2011).
Annular seals for non-contact sealing of fluids in turbomachinery
-
Childs, D.
(2003).
System and method for measuring dynamic loads in a magnetic bearing
-
Childs, D.
(2015).
Annular seals for non-contact sealing of fluids in turbomachinery
Teaching
teaching activities
- MEEN684 Professional Internship Instructor
- MEEN685 Directed Studies Instructor
- MEEN691 Research Instructor
Works By Students
chaired theses and dissertations
-
Aboel Hassan Muhammed, Ameen (2013-02). Rotordynamics of Twin-Screw Pumps.
-
Agnew, Jeffrey Scott (2012-02). Rotordynamic Performance of a Flexure Pivot Pad Bearing with Active and Locked Integral Squeeze Film Damper Including Predictions.
-
Al Jughaiman, Bader K. (2006-08). Static and dynamic characteristics for a two-axial-groove bearing and a pressure-dam bearing.
-
Arthur, Stephen Patrick (2015-12). Measured Rotordynamic Coefficients and Leakage for a Tooth-on-Rotor Labyrinth Seal with Comparisons to a Tooth-on-Stator Labyrinth Seal.
-
Avendano Ovalle, Raul David (2011-10). An Analysis of the Impact of Flexible Coupling Misalignment on Rotordynamics.
-
Balke, Nathan Edward (2017-12). Analyzing the Influence of a Swirl Brake on a Smooth Liquid Annular Seal Through Measuring Static and Rotordynamic Characteristics.
-
Brown, Philip David (2012-10). Measurement Versus Predictions of Rotordynamic Coefficients and Leakage Rates for a Hole-Pattern Gas Seal with Negative Preswirl.
-
Bullock, Joshua Thomas (2019-03). The Effects of Imposed Pre-Swirl on the Static and Rotordynamic Performance for Smooth Annular Liquid Seals.
-
Carter, Clint Ryan (2007-08). Measured and predicted rotordynamic coefficients and static performance of a rocker-pivot, tilt pad bearing in load-on-pad and load-between-pad configurations.
-
Coghlan, David (2014-08). Static, Rotordynamic, and Thermal Characteristics of a Four Pad Spherical-Seat Tilting Pad Journal Bearing with Four Methods of Directed Lubrication.
-
Deva Asirvatham, Thanesh (2010-12). Friction Factor Measurement, Analysis, and Modeling for Flat-Plates with 12.15 mm Diameter Hole-Pattern, Tested with Air at Different Clearances, Inlet Pressures, and Pressure Ratios.
-
Eitrheim, Nathan David (2017-10). Measured Static and Rotordynamic Characteristics of a Circumferentially-grooved-stator/smooth-rotor Liquid Annular Seal: Influence of Viscosity, Eccentricity, Pressure, and Speed.
-
Elrod, David Alan (1988-11). Entrance and exit region friction factor models for annular seal analysis.
-
Esser, Paul R. (2010-05). Measurements versus Predictions for a Hybrid (Hydrostatic plus Hydrodynamic Thrust Bearing for a Range of Orifice Diameters.
-
Gaines, Jennifer Elizabeth (2014-12). Examining the Impact of Pad Flexibility on the Rotordynamic Coefficients of Rocker-Pivot-Pad Tilting-Pad Journal Bearings.
-
Gary, Keith William (2017-10). Measurements of the Leakage and Rotordynamic Performance of Interlocking Labyrinth Seals.
-
James, Stephen M. (2010-05). Adapting a Beam-Based Rotordynamics Model to Accept a General Three-Dimensional Finite-Element Casing Model.
-
Kerr, Thomas Chandler (2017-10). Static and Dynamic Coefficient Measurements for a Thrust Collar Used in an Integrally Geared Compressor.
-
Khatri, Rasish (2014-08). An Experimental Investigation of the Static and Dynamic Performance of Horizontal-Application and Vertical-Application Three-Lobe Bearings.
-
Kheireddin, Bassem A. (2009-08). Investigation Of The Friction Factor Behavior for Flat Plate Tests Of Smooth And Roughened Surfaces With Supply Pressures Up To 84 Bars.
-
Klooster, David (2009-12). Transient Lift-off Test Results for an Experimental Hybrid Bearing in Air.
-
Kluitenberg, Matthew P (2015-04). Experimentally Determine the Impact of Jacking-Oil Pockets on the Rotordynamic Characteristics of a Four-Pad, LBP, Tilting-Pad Journal Bearing.
-
Kulhanek, Chris David (2012-02). Dynamic and Static Characteristics of a Rocker-Pivot, Tilting-Pad Bearing with 50% and 60% Offsets..
-
Kumar, Dhruv Dileep (2011-10). Backward Precessional Whip and Whirl for a Two Point Rubbing Contact Model of a Rigid Rotor Supported by an Elastically Supported Rigid Stator.
-
Mehta, Naitik (2012-07). Comparison of a Slanted-Tooth See-Through Labyrinth Seal to a Straight-Tooth See-Through Labyrinth Seal for Rotordynamic Coefficients and Leakage.
-
Moreland, James Alexander (2016-05). Influence of Pre-Swirl and Eccentricity in Smooth Stator/Grooved Rotor Liquid Annular Seals, Measured Static and Rotordynamic Characteristics.
-
Najeeb, Ovais Ahmed Bin (2017-11). Static and Rotordynamic Analysis of a Plain Annular (Liquid) Seal in the Laminar Regime with a Swirl Brake for Three Clearances.
-
Norrbin, Clay Sven (2016-12). Housing Shape's Impact on Electric Submersible Pump's Equilibrium Position and Rotordynamics.
-
Ramirez Alanis, Mauricio Alan (2017-12). Development and Validation of Test Rig for Measurements of Leakage and Rotordynamic Performance of Interlocking Gas Labyrinth Seals.
-
Rodrigues Rodrigues, Margarita (2006-12). Improving performance and rotordynamic characteristics of injection compressors via much longer balance-piston and division-wall seals.
-
Saha, Rohit (2012-02). A New, Iterative, Synchronous-Response Algorithm for Analyzing the Morton Effect.
-
Salas III, Jesus (2016-05). Influence of Pressure-Dams in Liquid Annular Seals in the Laminar Flow Regime, Measured Results for Static and Rotordynamic Characteristics.
-
Shrestha, Hari Krishna (2018-03). Experimental Study of the Static and Dynamic Characteristics of a Long (L/D=0.75) Labyrinth Annular Seal Operating Under Two-Phase (Liquid/Gas) Conditions.
-
Thorat, Manish R. (2010-05). Impact of Rotor Surface Velocity, Leakage Models and Real Gas Properties on Rotordynamic Force Predictions of Gas Labyrinth Seals.
-
Torres, Jose Maria (2016-12). Static and Rotordynamic Characteristics of Liquid Annular Seals with a Circumferentially-Grooved Stator and Smooth Rotor using Three Levels of Circumferential Inlet-Fluid Rotation.
-
Tschoepe, David 1987- (2012-08). Measurements Versus Predictions for the Static and Dynamic Characteristics of a Four-pad Rocker-pivot, Tilting-pad Journal Bearing.
-
Vannarsdall, Michael Lloyd (2012-10). Measured Results for a New Hole-Pattern Annular Gas Seal Incorporating Larger Diameter Holes, Comparisons to Results for a Traditional Hole-Pattern Seal and Predictions.
-
Wilkes, Jason C. (2008-08). A PERSPECTIVE ON THE NUMERICAL AND EXPERIMENTAL CHARACTERISTICS OF MULTI-MODE DRY-FRICTION WHIP AND WHIRL.
-
Wilkes, Jason Christopher (2012-02). Measured and Predicted Rotor-Pad Transfer Functions for a Rocker-Pivot Tilting-Pad Journal Bearing.
-
Zhang, Min (2017-12). Experimental Study of the Static and Dynamic Characteristics of a Long (L/D=0.65) Smooth Annular Seal Operating Under Two-Phase (Liquid/Gas) Conditions.
-
Zutavern, Zachary Scott (2006-08). Identification of rotordynamic forces in a flexible rotor system using magnetic bearings.
Background
education and training
awards and honors
- Fellow, conferred by American Society of Mechanical Engineers - (New York, New York, United States), 1990
Contact
first name
- Dara
has last name
- Childs
mailing address
-
Texas A&M University
Mechanical Engineering
3123 TAMU
College Station, TX 77843-3123
USA
Other
- d-childs@tamu.edu