期刊
28TH INTERNATIONAL SYMPOSIUM ON RAREFIED GAS DYNAMICS 2012, VOLS. 1 AND 2
卷 1501, 期 -, 页码 637-644出版社
AMER INST PHYSICS
DOI: 10.1063/1.4769602
关键词
DSMC method; chemical reactions; vibrational relaxation; normal shock wave
资金
- Air Force Office of Scientific Research ( Dr. Mitat Birkan)
A preliminary validation study of three DSMC chemistry models, two recent and one standard, is presented. First the 2D geometry and numerical approach used to simulate the shock experiments is verified. Next, 2 different vibrational relaxation models are validated by comparison with data for the M=9.3 case where dissociation is small in the nonequilibrium region of the shock. Finally, the 3 DSMC chemistry model results are compared for the M=13.4 case where nonequilbrium dissociation (in the region where the vibrational temperature is greatly different from the rotational and translational temperature) is important. It is shown that the peak vibrational temperature is very sensitive to vibrational favoring in the chemistry model and that the vibrationally-favored KSS model predicts the measured peak quite well.
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