Comparative computation of radiative heating environment for huygens probe entry flight

Hiroshi Osawa, Shingo Matsuyama, Naofumi Ohnishi, Keisuke Sawada

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Citations (Scopus)

Abstract

Numerical simulations of Huygens probe entry flowfield are carried out using the thermochemical nonequilibrium code loosely coupled with one-dimensional and three-dimensional radiative transfer. A modern multi-band model is used in the radiation calculation. In one-dimensional radiation calculation, the tangent-slab approximation is employed. In three-dimensional radiation calculation, on the other hand, the ray-tracing approach is employed in the direction of the Gauss quadrature point for the integration of the radiative intensity over the solid angle. In the tangent-slab approximation, the calculated radiative heat flux values agree well with those given by the previous Huygens probe entry flowfield prediction. In three-dimensional radiative transfer calculation, the radiative heat flux at the stagnation point becomes about 25% smaller than that given by the tangent-slab approximation due to the body curvature. On the other hand, the extent of reduction of the radiative heat flux values from those given by the tangent-slab approximation around the mid-cone region becomes less than that around the stagnation region.

Original languageEnglish
Title of host publicationCollection of Technical Papers - 9th AIAA/ASME Joint Thermophysics and Heat Transfer Conference Proceedings
Pages2299-2309
Number of pages11
Publication statusPublished - 2006 Dec 21
Event9th AIAA/ASME Joint Thermophysics and Heat Transfer Conference Proceedings - San Francisco, CA, United States
Duration: 2006 Jun 52006 Jun 8

Publication series

NameCollection of Technical Papers - 9th AIAA/ASME Joint Thermophysics and Heat Transfer Conference Proceedings
Volume4

Other

Other9th AIAA/ASME Joint Thermophysics and Heat Transfer Conference Proceedings
CountryUnited States
CitySan Francisco, CA
Period06/6/506/6/8

ASJC Scopus subject areas

  • Engineering(all)

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