Validation of DSMC results for chemically nonequilibrium air flows against measurements of the electron number density in RAM-C II flight experiment

Journal Article · Tue Dec 09 00:00:00 EST 2014 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4902587· OSTI ID:22390561

Shevyrin, Alexander A.; Vashchenkov, Pavel V.; Bondar, Yevgeniy A. ^[1]; Ivanov, Mikhail S. ^[2]

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1. Novosibirsk State University, 630090, Russia and Khristianovich Institute of Theoretical and Applied Mechanics SB RAS, Novosibirsk, 630090 (Russian Federation)
2. Khristianovich Institute of Theoretical and Applied Mechanics SB RAS, Novosibirsk, 630090 (Russian Federation)

An ionized flow around the RAM C-II vehicle in the range of altitudes from 73 to 81 km is studied by the Direct Simulation Monte Carlo (DSMC) method with three models of chemical reactions. It is demonstrated that vibration favoring in reactions of dissociation of neutral molecules affects significantly the predicted values of plasma density in the shock layer, and good agreement between the results of experiments and DSMC computations can be achieved in terms of the plasma density as a function of the flight altitude.

• OSTI ID: 22390561
• Journal Information: AIP Conference Proceedings, Vol. 1628, Issue 1; Conference: 29. International Symposium on Rarefied Gas Dynamics, Xi'an (China), 13-18 Jul 2014; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AIR FLOW
ALTITUDE
COMPUTERIZED SIMULATION
DISSOCIATION
ELECTRONS
FLOW MODELS
GAS FLOW
LAYERS
MOLECULES
MONTE CARLO METHOD
PLASMA DENSITY
SPACE VEHICLES
VALIDATION