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Journal of Applied Mechanics and Technical Physics

2016 year, number 6

DETONATION COMBUSTION OF HYDROGEN IN AN AXISYMMETRIC CHANNEL WITH A CENTRAL BODY

Yu. V. Tunik
Institute of Mechanics at the Lomonosov Moscow State University, Moscow, 119192, Russia
Keywords: конвергентно-дивергентное сопло, сверхзвуковой поток, водородно-воздушная смесь, детонационное горение, convergent-divergent nozzle, supersonic flow, hydrogen-air mixture, detonation combustion

Abstract

The problem of initiation and stabilization of detonation combustion of a hydrogen-air mixture injected into an axisymmetric channel with a finite-length central body in a flow with a Mach number M0=5-9 is solved. It is numerically demonstrated that the presence of the central body both in a convergent-divergent nozzle and in an expanding channel leads to stabilization of detonation combustion of a stoichiometric hydrogen-air mixture at free-stream Mach numbers M0>7. Various channel configurations that ensure different values of thrust generated by detonation combustion of a stoichiometric hydrogen-air mixture are compared.