TY - GEN
T1 - Influence of coolant gas properties on film cooling effectiveness in high enthalpy flows
AU - Mizoguchi, M.
AU - Aso, S.
AU - Tani, Y.
PY - 2009/1/1
Y1 - 2009/1/1
N2 - The influence of coolant gas properties on film cooling effectiveness has been investigated numerically. Finite-rate catalysis is assumed in chemically and thermally nonequilibrium flows. Numerical simulation shows that helium is an effective coolant for the reduction of aerodynamic heating in high enthalpy flows. The reduction of diffusive heat flux is shown to depend on the kind of coolant gas, injected mass, and diffusion mass flux of atomic species into the coolant layer. Therefore, the diffusion process between the coolant and atomic species is an additional factor affecting film cooling effectiveness in high enthalpy flows. Copyright Â
AB - The influence of coolant gas properties on film cooling effectiveness has been investigated numerically. Finite-rate catalysis is assumed in chemically and thermally nonequilibrium flows. Numerical simulation shows that helium is an effective coolant for the reduction of aerodynamic heating in high enthalpy flows. The reduction of diffusive heat flux is shown to depend on the kind of coolant gas, injected mass, and diffusion mass flux of atomic species into the coolant layer. Therefore, the diffusion process between the coolant and atomic species is an additional factor affecting film cooling effectiveness in high enthalpy flows. Copyright Â
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U2 - 10.2514/6.2009-1034
DO - 10.2514/6.2009-1034
M3 - Conference contribution
AN - SCOPUS:78549241320
SN - 9781563479694
T3 - 47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition
BT - 47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition
PB - American Institute of Aeronautics and Astronautics Inc.
ER -