Abstract
The two-dimensional numerical analysis of experimental data on the degree of ionization of a compressed layer at the surface of a spacecraft shaped like a spherically blunted cone at a flight speed higher than 7 km/s at heights of 61–81 km is presented. The discussed data of a flight experiment were acquired within the framework of the RAM-C research project. A model of nonequilibrium physicochemical processes in a compressed layer behind the front of a leading shock wave, whose gas dynamics is described by Navier-Stokes equations, is considered. Different models of chemical kinetics were studied taking into account the processes of nonequilibrium dissociation and associative ionization. With the use of nonequilibrium dissociation models, the flight data on the concentration of electrons were adequately described not only under nearly equilibrium conditions but also under conditions without the thermalization of the internal degrees of freedom of the molecules of high-temperature air in a compressed layer.
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Original Russian Text © S.T. Surzhikov, 2015, published in Khimicheskaya Fizika, 2015, Vol. 34, No. 2, pp. 24–42.
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Surzhikov, S.T. Two-dimensional numerical analysis of flow ionization in the RAM-C-II flight experiment. Russ. J. Phys. Chem. B 9, 69–86 (2015). https://doi.org/10.1134/S1990793115010200
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DOI: https://doi.org/10.1134/S1990793115010200