Computational Simulation of Multiheaded Detonation Dynamics in Rotating Detonation Engines

摘要

A phenomenological model tor propellant mixing is developed and applied to the analysis of the Rotating Detonation Engine (RDE). The mixing model presented is expressed as a first-order approximation to Fick's law. The behaviour of the waves in the RDE is analysed parametrically as stagnation temperature and mixing time are varied. The dynamics of counter-rotating waves are probed through the use of a wall boundary condition intended to mimic the effect of shock waves passing through one another. It is found that sustained combustion does not occur for mixing times above a certain, problem-dependent value. Different mixing times give rise to qualitatively different wave patterns, but the mechanism of this process is not clear.