Detached-Eddy Simulation of Cavity Flame-holding in supersonic

摘要

The flame-holding of a cavity for scramjet engine is studied numerically. An advanced model named DDES (Delayed Detached -Eddy Simulation) is utilized as the turbulence model. The chemical reaction model is finite-rate chemical reaction model. A typical example of cavity flame combustion (Ma=2.5) is simulated. The numerical results reveal the flame-holding of the cavity, and the interaction between shock wave and shear layer inside the cavity during the combustion.