Modelling of radiative fluxes to the heat shield of a Martian orbiter
by Nicolas Bédon; Marie-Claude Druguet; Pascal Boubert
International Journal of Aerodynamics (IJAD), Vol. 4, No. 3/4, 2014

Abstract: The present study proposes a simple model for simulating radiation of high-temperature gases, with the intention of predicting radiative transfers in hypersonic flows surrounding a spacecraft when it enters a planetary atmosphere. This paper presents the methodology and the physical models implemented in an aerodynamics code to account for those specific heat transfers in the flow past a blunt body entering a CO₂ atmosphere. The line-by-line radiation models include the atomic lines of the atoms C and O, and the molecular systems of the molecule CO, in the [100-7,000 nm] range of the radiation spectrum. The radiation transfers are computed according to a ray-tracing method. Analyses are done to understand the radiative behaviour of the high-temperature gases. The cumulated radiative heat fluxes to the surface of the spacecraft are compared to other computed radiative heat transfer results for verification purpose.

Online publication date: Sat, 28-Feb-2015

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