并行计算在弧形翼弹数值仿真中的应用  

Application of Parallel Computation in Numerical Simulation of Projectile with Wrap-Around Fins

作　　者：郑健[1] 周长省[1] 张磊[1] 

机构地区：[1]南京理工大学机械工程学院,江苏南京210094

出　　处：《计算机仿真》2008年第4期69-71,152,共4页Computer Simulation

摘　　要：在以MPICH技术构建的局域网集群系统下,利用并行计算程序进行了超声速弧形翼-身组合体的三维绕流流场数值仿真,得到了弧形翼射弹的流场信息;并且通过对不同数量网格在集群不同结点数目下的计算结果进行分析比较,得出了加速比和并行效率随结点数目变化的规律,发现大规模网格在加速比和并行效率方面性能优越,更适合集群系统的并行计算,同时验证了此集群系统在数值仿真应用中的有效性和优越性,为进行大规模科学工程计算提供了技术支持。A parallel cluster system based on workstation local area network platform was set up by MPICH specification. Numerical simulation and parallel computation of three dimensional flow field of supersonic projectile with wrap - around fins is done using the parallel cluster system. The flow field of the projectile with WAF is achieved. By analyzing the results obtained from different mesh numbers and computing nodes, the rule of accelerated ratio and parallel efficiency with regard to different nodes numbers are obtained, large - scale mesh is found to be more suitable to parallel computation due to its outstanding accelerated ratio and parallel efficiency. The effectiveness and advantage of using this parallel platform are validated, and the technical reference to cosmically scientific and engineering application computing is also provided.

关 键 词：数值仿真 弧形翼 并行计算 计算流体力学 

分 类 号：V211[航空宇航科学与技术—航空宇航推进理论与工程]