Modelling of radiative fluxes to the heat shield of a Martian orbiter

Nicolas Bedon; Marie-Claude Druguet; Pascal Boubert

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Modelling of radiative fluxes to the heat shield of a Martian orbiter

机译：火星轨道热屏辐射通量建模

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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 CO_2 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.

机译：本研究提出了一种模拟高温气体辐射的简单模型，目的是预测航天器进入行星大气时围绕航天器的高超音速流的辐射传递。本文介绍了在空气动力学代码中实现的方法和物理模型，以说明流经钝体进入CO_2大气的气流中的特定传热。逐行辐射模型包括原子C和O的原子线以及分子CO的分子系统，它们的辐射光谱范围为[100-7,000 nm]。辐射传输是根据射线追踪方法计算的。进行分析以了解高温气体的辐射行为。为了验证目的，将累积到航天器表面的辐射热通量与其他计算的辐射热传递结果进行比较。

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来源
《International Journal of Aerodynamics》 |2014年第4期|共21页
作者
Nicolas Bedon; Marie-Claude Druguet; Pascal Boubert;
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正文语种 eng
中图分类空气动力学;
关键词
Modelling; Aerodynamics; Hypersonic flow; Radiative heat flux; Mars atmosphere entry; Ray-tracing method; Line-by-line radiation model;

机译：建模;空气动力学;人流;辐射热通量;火星大气进入;射线追踪法;逐行辐射模型;

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机译：火星轨道热屏辐射通量建模
2. Influence of Radiative Heating on a Martian Orbiter [J] . Olivier Rouzaud, Lionel Tesse, Tristan Soubrie, Journal of Thermophysics and Heat Transfer . 2008,第1期

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4. INVESTIGATION OF RADIATIVE HEAT FLUXES FOR EXOMARS ENTRY IN THE MARTIAN ATMOSPHERE [C] . Amandine Le Brun, Pierre Omaly International workshop on radiation of high temperature gases in atmospheric entry . 2011

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5. Remote sensing of radiative fluxes and heating rates from satellite instrument measurements. [D] . Feldman, Daniel Robert. 2008

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Modelling of radiative fluxes to the heat shield of a Martian orbiter

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