Thermal Effects in Liquid Oxygen Hydrostatic Journal Bearings
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Numerical predictions for static performance and rotordynamic coefficients for a roughened stator LO2 HJB operating at typical conditions in the SSME HPOTP are presented. The calculations are performed for an adiabatic THD model and an isothermal flow model. The two flow models predict almost identical static and dynamic performance characteristics, even though large temperature increases and fluid property variations in the bearing fluid film are predicted by the THD model. However, a high temperature rise across the bearing affects not only the liquid properties but also the bearing geometry. A parametric study shows a strong impact of bearing clearance variations on the bearing performance and, hence, the importance of thermal effects becomes evident. © 1996 Taylor & Francis Group, LLC.
author list (cited authors)
Yang, Z., San Andres, L., & Childs, D. W.