关键词: 固体推进剂火箭发动机;计算空气动力学;网格生成;并行计算

Abstract: Zonal boundaries of sub-zone exist in numerical grid generation with decomposition ofcomputational domain and the boundary condition on these zonal boundaries is numerical rather thanphysical, which is usually difficult to deal with. A method named ADMZI (Alternating DirectionMulti-Zone Imlicit) dealing with zonal boundaries implicitly is presented. This method is simple andpractical. It possesses flexible data structure and is especially suitable for zonal boundaries difficult tobe defined. With this method the grid in the flowfield between two stages at the moment of separationof multi-stage rocket is generated. The results show that it is successful to be applied in thiscondition.

Key words: Solid propellant rocket engine;Computational aerodynamics;Grid generation;Parallel computing