Stationary Mach Configurations with Pulsed Energy Release on the Normal Shock

被引:2
|
作者
Chernyshov, Mikhail V. [1 ]
Kapralova, Anna S. [1 ]
Matveev, Stanislav A. [1 ]
Savelova, Karina E. [1 ]
机构
[1] Balt State Tech Univ VOENMEH, Dept Plasma & Gas Dynam, 1 Pervaya Krasnoarmeyskaya Ul, St Petersburg 190005, Russia
关键词
steady shock wave; Mach reflection; von Neumann criterion; triple configuration; detonation; real gas effects; TRIPLE CONFIGURATIONS; DETONATION; REFLECTION; WAVE; GAS; ONSET; ANGLE;
D O I
10.3390/fluids6120439
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
We obtained a theoretical analysis of stationary Mach configurations of shock waves with a pulsed energy release at the main (normal) shock and a corresponding change in gas thermodynamic properties. As formation of the stationary Mach configuration corresponds to one of two basic, well-known criteria of regular/Mach shock reflection transition, we studied here how the possibility of pulsed energy release at the normal Mach stem shifts the von Neumann criterion, and how it correlates then with another transition criterion (the detachment one). The influence of a decrease in the "equilibrium" gas adiabatic index at the main shock on a shift of the solution domain was also investigated analytically and numerically. Using a standard detonation model for a normal shock in stationary Mach configuration, and ordinary Hugoniot relations for other oblique shocks, we estimated influence of pulsed energy release and real gas effects (expressed by decrease of gas adiabatic index) on shift of von Neumann criterion, and derived some analytical relations that describe those dependencies.
引用
收藏
页数:15
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