关键词: 发动机喷管;二相流;流动分布;数值仿真

Abstract: In compressible two phase flow, drag coefficient including the influence of compressibility and particle accumulation was accounted for. The computation uses TVD algorithm for both gas and particle, numerical computation of dilute gas particle two phase turbulent flow over sand bed, a flat plate and in JPL nozzle were performed. The calculations agree well with the experimental data. In JPL nozzle, with increasing loading ratio, the interaction becomes strong, the gas temperature is increased, and the Mach number is decreased, but the influence of the loading ratio on the pressure is very small. With increasing particle diameter, the gas axial temperature is decreased.

Key words: Engine nozzle;Two phase flow;Flow distribution;Numerical simulation