TY - GEN
T1 - Trajectory-based heating analysis of galileo probe entry flowfield with radiation and ablation
AU - Matsuyama, Shingo
AU - Ohnishi, Naofumi
AU - Sasoh, Akihiro
AU - Sawada, Keisuke
PY - 2003/12/1
Y1 - 2003/12/1
N2 - A trajectory-based heating analysis of Galileo probe entry flowfield is attempted to reproduce the heat shield recession data obtained during the entry flight. The mass conservation equations for H2-He mixture and ablation product gas are employed and solved by assuming thermochemical equilibrium. The ablation process is assumed to be quasi-steady and coupled with flowfield calculation. The absorption coefficients of a gas are calculated by multi-band model having 2440 wavelength points. One dimensional radiative transfer calculation using tangent- slab approximation is employed. Park's Injection- induced turbulence model is employed to account for enhanced turbulent effect in the frustum region. The present calculation overestimates heat shield recession for the entire forebody compared with the flight data. However, surface recession histories at the frustum region show fair agreement up to the trajectory point prior to the peak heating point.
AB - A trajectory-based heating analysis of Galileo probe entry flowfield is attempted to reproduce the heat shield recession data obtained during the entry flight. The mass conservation equations for H2-He mixture and ablation product gas are employed and solved by assuming thermochemical equilibrium. The ablation process is assumed to be quasi-steady and coupled with flowfield calculation. The absorption coefficients of a gas are calculated by multi-band model having 2440 wavelength points. One dimensional radiative transfer calculation using tangent- slab approximation is employed. Park's Injection- induced turbulence model is employed to account for enhanced turbulent effect in the frustum region. The present calculation overestimates heat shield recession for the entire forebody compared with the flight data. However, surface recession histories at the frustum region show fair agreement up to the trajectory point prior to the peak heating point.
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M3 - Conference contribution
AN - SCOPUS:84896767068
SN - 9781624100970
T3 - 36th AIAA Thermophysics Conference
BT - 36th AIAA Thermophysics Conference
T2 - 36th AIAA Thermophysics Conference 2003
Y2 - 23 June 2003 through 26 June 2003
ER -