关键词: 碰撞破碎模型+;欧拉-拉格朗日两相流模型+;沉积

Abstract: After collision with the wall in SRM,carge number of droplets in the SRM can!be sedimentated or broken up.As the results,the performance of SRM is affected.To study this problem,the droplets-wall collision and break-up model and Euler-Lagrange model are adopted to simulate the collision,breaking up and sediment between different sizes droplets and back wall region in the nozzle together with the convergent section in a certain SRM.The results show that the droplets collision and breaking up can increase the number of small droplets greatly,which can have a strong influence on the motion,distribution,collision,sediment and congregation in the flow field.

Key words: Collision and break-up model+;Euler-Lagrange model+;Sediment