Shock Wave Structure for Argon, Helium, and Nitrogen

Details Shock Wave Structure for Argon, Helium, and Nitrogen Shock Wave Structure for Argon, Helium, and Nitrogen

2004-07-28

arxiv.org/abs/math-ph/0407069v1

Physics

Mathematical Physics

6 pages, 6 figures

Scientific paper

10.1063/1.1941705

We compare the thickness of shock wave fronts at different Mach numbers, modeled via Navier-Stokes (NS) and Quasi-gasdynamic (QGD) equations, with experimental results from the literature. Monoatomic argon and helium, and diatomic nitrogen, are considered. In this modeling a finite-difference scheme with second-order spatial accuracy is employed. For argon the density thickness calculated via QGD and NS models are in good agreement with each other, and with the experimental results. For helium QGD and NS results agree well with those from the bimodal model. For nitrogen, the QGD results are closer to the experimental data than NS results. The QGD-based algorithm converges to the steady state solution faster than the NS-based one.

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