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Chapitre D'ouvrage Année : 2014

Elaboration of collisional-radiative models applied to Earth and Mars entry problems

Résumé

Three Collisional-Radiative (CR) models are elaborated and tested in typical atmospheric entry conditions. The first CR model (CoRaM-AIR) is dedicated to the Earth atmospheric entry and is based on an electronically and vibrationally specific state-to-state description of N-2-O-2-Ar mixtures. The second CR model (CoRaM-MARS) is dedicated to the Mars atmospheric entry and treats the CO2-N-2-Ar mixtures with a similar vibrationally and electronically specific approach. Since their implementation in a Computational Fluid Dynamics (CFD) code has not yet been performed, they are implemented in a OD code giving the evolution in time of the excited states number density in constant pressure and temperature conditions similar to trajectory points at lower altitude. Nevertheless, such an implementation in a CFD code has been performed for a third CR model, specifically devoted to pure nitrogen flows (CoRaM-N-2). The results show that the equilibrium is reached relatively slowly. In addition, the influence of radiation on the chemistry is weak.
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Dates et versions

hal-01612382 , version 1 (06-10-2017)

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  • HAL Id : hal-01612382 , version 1

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Julien Annaloro, Arnaud Bultel, Pierre Omaly. Elaboration of collisional-radiative models applied to Earth and Mars entry problems. Gleizes, A. and Schein, J. and Teulet, P. 13th High-Tech Plasma Processes Conference (htpp-2014), 550, pp.UNSP 012049, 2014. ⟨hal-01612382⟩
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