过载状态下固体火箭发动机燃烧室内二相流动数值模拟

Numerical Simulation of Two-Phase Flow in Solid Rocket Motor Combustion Chamber under Overload Regime

对过载状态下固体火箭发动机燃烧室内二相流动进行了数值研究。建立了过载状态下二维平面颗粒轨道模型 ,应用二阶迎风格式构造了有限体积计算框架 ,对有过载和无过载多种工况燃烧室内流动进行了计算 ,得出了过载对颗粒相和气相的某些影响 ,结果对于发动机工作过程研究及发动机热结构设计具有一定指导意义。

Two-phase flow in the solid rocket motor combustion chamber under overload condition is studied with numerical method. A 2-D plane particle-trajectory model is developed, and second order upwind scheme is applied to construct the finite volume calculation modular. With this algorithm, several flow regimes with or without overload are calculated and some effects of overload on the particle trajectories and gas phase are established. The simulation results are useful to the research of operation procedure and thermal structure design of the motor.