带制退器复杂流场并行算法研究

parallel algorithm to simulate the 3D muzzle flow field was developed in the environment of CLUSTER, Linux and MPI (Message Passing Interface). The mesh used in this program was divided structured mesh, the numerical method was Jameson Scheme and the LU Implicit Method. The file contains the sub-areas’ information was built to improve the program’s applicability. By uniting the consecutive sub-areas of the flow field, the loads of different processes were equalized, and the parallel efficiency was improved. In the message communication, advanced a method of User-defined data type and Temporary Parameters. By the use of dynamic allocations of EMS memory, reduced the demands of EMS memory in the parallel system. The parallel algorithm is proved convenience and efficient in the numerical simulation of flow fields with intricate topology. And it will be very helpful to study the muzzle brake capabilities.