Stabilization of detonation combustion of a high-velocity combustible gas mixture flow in a plane channel

Abstract

Several kinetic models of hydrogen oxidization are compared for the purpose of selecting the reaction mechanism to describe the chemical interaction in numerically modeling the detonation combustion of a hydrogen-airmixture. Within the framework of the chosen kinetic model the possibility of stabilizing a detonation wave in a stoichiometric hydrogen-airmixture arriving in a plane channel at a supersonic velocity is discussed. For certain inflow Mach numbers a method for determining the shape of the channel, in which a stabilized detonation wave can be formed without energy supply, is proposed. In the case of the M0 = 5.5 combustible mixture flow past a semi-infinite symmetric plane body aligned with the flow the structure of the detached detonation wave stabilized ahead of the obstacle is studied.