Shock-tube Time-history Measurements of CO and H2O Using IR Laser Absorption
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© 2017 by Mulvihill, C.R., Mathieu, O., Petersen, E.L. Fixed-wavelength, single-pass, direct absorption laser diagnostics have been employed for CO and H2O to measure species time-histories behind reflected shock waves. A tunable diode laser near 1.38 μm was used to access the ν1+ν3 band of H2O, while a quantum cascade laser near 4.56 μm was used to access the fundamental ν" = 0 band of CO. Conditions investigated thus far span a wide range of temperatures (1100 to 2100 K) and pressures (1 to 11 atm). Several different fuel systems were investigated, and sample results from some of these systems are presented here. The theoretical background and experimental setup used for the laser measurements are also presented in this paper.
author list (cited authors)
Mulvihill, C., Mathieu, O. E., & Petersen, E. L.