关键词: 固体推进剂火箭发动机;燃烧室;二相流;颗粒大小;颗粒轨迹

Abstract: The particle motion trajectories in two phase flow of solid rocket motor combustion chamber are calculated by the PSIC(Particle Source in Cell)method.The gas phase axisymmetric N S and k ε equations in two phase flow are solved by SIMPLE method and finite volume method on nonstaggered grid system.Study results for combustion chamber with conocyl type grain specify that:the particle trajectories will be effected by particle dimension,initial velocity,gas phase flow property,etc.The two phase flow in combustion chamber is non equilibrium and non constant delay flow.The more particle dimension and inertia are,the worse property with gas phase flow is.The particles which dimensional difference is greater may possesses all different trajectories.On certain conditions,the particle can pass through the mean line of passage,even strike at opposite wall and eject back.The particle will be effected by gas phase vortex,even can be involved in vortex +

Key words: Solid propellant rocket engine;Combustion chamber;Two phase flow;Particle size;Particle trajectory