Detonation of a Combustible Gas Mixture during the Interaction of a Shock Wave with an Elliptical Region of a Heavy Inert Gas

Author(s):  
P. Yu. Georgievskiy ◽  
V. A. Levin ◽  
O. G. Sutyrin
Author(s):  
P. YU. GEORGIEVSKIY ◽  

On the basis of the Euler equations for a perfect gas with an inhomo-geneous distribution of molar mass, the interaction of a shock wave in a combustible gas with an elliptic bubble of an inert gas of elevated density is simulated in planar two-dimensional (2D) formulation. Various values of the Mach number M of the incident wave and the ratio of bubble axles are considered. A finite-volume Godunov-type method of the second order of approximation with HLLC (Harten-Lax-van Leer Contact) Riemann solver is used for numerical simulation. The combustion reaction of the gas mixture is modeled using the two-stage Korobeynikov-Levin kinetics.


1984 ◽  
Vol 20 (1) ◽  
pp. 82-84 ◽  
Author(s):  
A. P. Voitov ◽  
B. E. Gel'fand ◽  
S. A. Gubin ◽  
V. N. Mikhalkin ◽  
V. A. Shargatov

2020 ◽  
Vol 42 (9) ◽  
pp. 1655-1662 ◽  
Author(s):  
Yuki Miyahara ◽  
Masahiro Yamamoto ◽  
Romeo Thorbecke ◽  
Shoji Mizuno ◽  
Takeharu Tsuge

2003 ◽  
Vol 48 (2) ◽  
pp. 75-79 ◽  
Author(s):  
R. I. Nigmatulin ◽  
V. Sh. Shagapov ◽  
I. K. Gimaltdinov ◽  
F. F. Akhmadulin

2015 ◽  
Vol 51 (4) ◽  
pp. 322-327 ◽  
Author(s):  
O. M. Salamov ◽  
A. A. Garibov ◽  
K. D. Sultanova

If a combustible gas at atmospheric pressure is ignited near one end of a tube and the rate of supply of heat by combustion is greater than the loss by radiation and conduction, the progress of the flame will be rapidly accelerated. Of a sudden, detonation may occur. A detonation wave travels forward at a nearly uniform rate, combustion proceeding simultaneously and a “ retonation ” wave travels back through the burnt gases from the “ position of detonation " The discovery of the detonation wave by Berthelot and the researches of Mallard and Le Chatelier and of Dixon thereon are matters of history. The purpose of the work described in this communication was to find the position at which a burning mixture of gases would develop a detonation wave under certain fixed conditions. The influence on such position of a change of strength of the combustible gas mixture and then of the nature of the diluent gas was studied. The effect of the addition of small quantities of certain “ antiknock ” compounds has also been investigated.


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