Abstract: The three dimensional complex cold flow field of a gas generator used for a missile control system was numerically simulated using RNG k ε model by the compressible form of the SIMPLE algorithm based on unstructured meshes The numerical results were in agreement with experimental data It is useful in understanding the flow field characteristics in the gas generator, especially in the labyrinthic multilayer lantern rings in it

Key words: Gas generator;Channel flow;Turbulent flow;Three dimensional flow;Numerical simulation

摘要： 采用两方程RNGk ε湍流模型 ,通过非结构网格上的SIMPLE算法 ,对某远程火箭弹控制系统燃气源复杂通道内流场进行了冷流数值模拟 ,获得了通道内各气流参量的三维分布 ,了解了燃气源内各处特别是控制气流流经的迷宫形多层导热套环结构内的气流流动特性 ,计算结果与实验结果基本吻合。

关键词: 燃气发生器;管道流;湍流;三维流;数值仿真