Detonation Initiation On A Wedge In A Supersonic Reacting Flow
Abstract
In this paper we report steady, 2-D, inviscid solutions for the near-field and far-field of a supersonic reactive flow over a variable double ramp geometry. The incident shock wave compresses arid heats the reactants which will combust after flowing some induction length. Upon reaction, a detonation wave forms arid intersects the leading wave at some distance from the ramp surface. Computational fluid dynamic simulations using finite-rate kinetics have bee11 performed that resolve the near-field ZND structure. In this paper, reaction-polar diagrams are developed and the detonation branch solutions are used to investigate the wave interaction processes that may lead to a steady three-wave structure. By considering this formation process, new oblique detonation wave stabilization criteria b m d on the freestream conditions and ramp geometry are provided.
