MPI+OpenMP算法在三维可压缩流场计算中的应用  

Application and Research on Three-dimensional Compressible Flow Field Using MPI+OpenMP Algorithm

作　　者：许啸[1] 王学德[1] 谭俊杰[1] 

机构地区：[1]南京理工大学能源与动力工程学院,江苏南京210096

出　　处：《航空计算技术》2011年第6期32-36,共5页Aeronautical Computing Technique

基　　金：南京理工大学紫金之星项目资助;南京理工大学自主科研项目资助(2011YBXM111);博士点基金项目资助(20093219120031)

摘　　要：在多核CPU集群并行体系结构下,采用MPI+OpenMP的混合并行算法,对可压缩流场进行数值模拟,并在计算时间上与MPI算法进行比较。流场计算的控制方程为Euler方程,空间离散采用Jameson中心差分格式,时间离散采用R-K法,并行模式采用Master/Slave模式。通过对M6机翼和某弹丸采用多种并行方法进行流场的数值模拟,得出MPI+OpenMP混合算法在一定条件下具有高效性的结论。Simulate the high-speed compressible flow field based on the multi-core CPU cluster parallel structure by using MPI＋OpenMP hybrid parallel algorithm,and compare the computational time with MPI algorithm.Euler Equation is applied on the government equation of the flow field computaion,Jamson central difference is applied on the scheme of the spatial discretisation,R-K method is applied on the temporal discretisation,Master-slave mode is applied on the parallel mode.Simulate the flow field of M6 wing and one kind of projectile in one node mode and in serveral nodes mode,get the conclusion that MPI＋OpenMP hybrid parallel algorithm would be more effencient under certain conditions.

关 键 词：有限体积法 并行计算 进程 线程 MPI+OpenMP混合算法 

分 类 号：V211[航空宇航科学与技术—航空宇航推进理论与工程]