Statistics – Computation
Scientific paper
Dec 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003esasp.533..103c&link_type=abstract
In: Proceedings of the First International Workshop on Radiation of High Temperature Gases in Atmospheric Entry, 8-10 October 20
Statistics
Computation
Space Vehicles, Planetary Atmospheres, Entry
Scientific paper
In some hypersonic regimes, the effects of radiative transfer can drastically modify the hydrodynamic flow. For such applications, it is important to have a model that fully couples hydrodynamics and radiation in order to have a good behaviour of the solution. However, coupling with the full radiative transfer equation is usually very expensive hence it is not reasonable for multidimensional unsteady computations. Our choice is to use a moment model for the radiation part, which is way cheaper. This model uses an entropic closure that allows to be consistant with the fundamental physical properties such as energy conservation, entropy dissipation and flux-limitation. We also developped it to be multigroup in order to correctly predict the solution of strongly frequency-dependent problems.
Charrier Pierre
Dubroca Bruno
Duffa G.
Turpault Rodolphe
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