北京航空航天大学学报 ›› 2000, Vol. 26 ›› Issue (2): 194-197.

• 论文 • 上一篇    下一篇

二维跨音速Euler方程分区并行算法

吕晓斌, 朱自强   

  1. 北京航空航天大学 飞行器设计与应用力学系
  • 收稿日期:1998-10-21 出版日期:2000-02-29 发布日期:2010-09-27
  • 作者简介:吕晓斌(1965-),男,山东成武人,博士生,100083,北京.
  • 基金资助:

    国家自然科学基金资助项目(19972007)

2D Multiblock and Parallel Method to Solve Transonic Euler Equations

Lü Xiao-bin, ZHU Zi-qiang   

  1. Beijing University of Aeronautics and Astronautics,Dept. of Flight Vehicle Design and Applied Mechanics
  • Received:1998-10-21 Online:2000-02-29 Published:2010-09-27

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Van Leer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,分析了影响并行效率和通讯过载比的主要因素.

Abstract: 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.

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