二维跨音速Euler方程分区并行算法  

2D Multiblock and Parallel Method to Solve Transonic Euler Equations

作　　者：吕晓斌[1] 朱自强[1] 

机构地区：[1]北京航空航天大学飞行器设计与应用力学系

出　　处：《北京航空航天大学学报》2000年第2期194-197,共4页Journal of Beijing University of Aeronautics and Astronautics

基　　金：国家自然科学基金资助项目 !(19972007)

摘　　要：对二维跨音速流动的Euler方程分区算法、并行算法以及多区计算的有效内边界耦合条件进行了探讨 ,应用VanLeer矢通量分裂方法和一维数组方式 ,研究了多种区域分解数目的分区计算效率 .并行计算中采用“先进先出”的同步控制等待机制 ,采用纯结点并行编程方式进行了单区、二区和四区并行计算对比 。Two dimensional domain decomposition method and parallel computing method are applied to solve Euler equations on networked computers. The Van Leers Flux Vector Splitting method is applied. All the variables are stored in one dimensional order, so the domain decomposition can be made arbitrarily. Non reflection boundary conditions, conservative interface boundary condition and “First In First Out” synchronization strategy are applied. Two examples of different decomposition show that efficiency of various types of decomposition does not decrease by using conservative interface boundary condition given by the present paper. Influencing factors on increasing parallel performance are discussed. Examples show that the higher speedup ratio can be reached if the overhead ratio of communication over computing is smaller when parallel computing load maintains balanced well.

关 键 词：计算流体力学 分区并行算法 跨音速流动 

分 类 号：O354.2[理学—流体力学] V211.3[理学—力学]