Detailed kinetic of CO2 dissociation and C ionization: application to atmospheric Martian entries

15th International Congress on Plasma Physics; 13th Latin American Workshop on Plasma Physics

Annaloro, Julien^1 ; Bultel, Arnaud^1 ; Omaly, Pierre^2

UMR CNRS 6614 CORIA, Universite de Rouen, Avenue de l'Université, 76801 Saint-Etienne du Rouvray, France^1

CNES Toulouse, 18 avenue Edouard Belin, 31401 Toulouse, France^2

关键词: Detailed kinetic modeling;    Elementary process;    Extrapolation methods;    Forward-and-backward;    Global rate coefficients;    Population densities;    Quasi-steady state;    Rate coefficients;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/511/1/012053/pdf
DOI  :  10.1088/1742-6596/511/1/012053

来源: IOP

【 摘 要 】

In order to calculate global rate coefficients for atmospheric Martian entries situations, a detailed kinetic model using a state-to-state approach is developped for two important processes: dissociation/recombinaison of CO2and ionization/recombinaison of Carbon. The behavior of the species involved is governed by the general balance equation including forward and backward elementary processes whose rate coefficients are in part based on experimental data. Extrapolation methods are used when necessary. During the population densities time-evolution, a quasi steady state can be identified: a global rate coefficient can be derived only during this state. The rates therefore obtained are fitted under a modified Arrhenius law and some of them are finally compared with experimental results.