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Generalized von Neumann criterion for flows with pulsed energy release and a change in the chemical composition of a gas mixture at a Mach stem
Chernyshov M. V.
1, Laptinskaya M. M.
1
1Baltic State Technical University "VOENMEKH" named after Marshal D. F. Ustinov, St. Petersburg, Russia
Email: chernyshov_mv@voenmeh.ru, laptinskaia_mm@voenmeh.ru
An analog of the von Neumann criterion is analytically derived and numerically studied for changing the type (regular or Mach) reflection of an oblique steady shock if there is a pulsed release or absorption of energy at the Mach reflection, as well as a change in chemical composition of gas mixture on a strong main (Mach) shock. The influence of those factors on the displacement of the generalized criterion obtained is estimated in comparison with the well-known case of flow without chemical reactions and effects of a real gas. Keywords: regular and Mach reflection, von Neumann criterion, detonation.
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