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Volume 26 Issue 2
Feb.  2000
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Journal of Beijing University of Aeronautics and Astronautics  > 2000  >  26(2): 194-197.
Lü Xiao-bin, ZHU Zi-qiang. 2D Multiblock and Parallel Method to Solve Transonic Euler Equations[J]. Journal of Beijing University of Aeronautics and Astronautics, 2000, 26(2): 194-197. (in Chinese)
Citation: Lü Xiao-bin, ZHU Zi-qiang. 2D Multiblock and Parallel Method to Solve Transonic Euler Equations[J]. Journal of Beijing University of Aeronautics and Astronautics, 2000, 26(2): 194-197. (in Chinese)
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2D Multiblock and Parallel Method to Solve Transonic Euler Equations

  • Beijing University of Aeronautics and Astronautics,Dept. of Flight Vehicle Design and Applied Mechanics

  • Received Date: 21 Oct 1998
  • Publish Date: 29 Feb 2000
    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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  • [1] Yadlin Y, Caughey D A. Block multigrid solution of the Euler equations of compressible fluid flow[J]. AIAA Journal,1991,29(5):712~719.  [2]Keyes D.Domain decomposition :a bridge between nature and parallel computers . ICASE Report 92-44,1992.  [3]Van Leer B.Flux-vector splitting for the Euler equations[J].Lecture Notes in Physics,1982,170:507~512.  [4]MacCormark R W.A numerical method for solving the equations of compressible viscous flow[J].AIAA Journal,1982,20(9):1275~1281.  [5]Wang Z J．A fully conservative interface algorithm for overlapped grids ． J Comp Phys,1990,122:96~106．  [6]Roose D, Driessche R．Parallel computers and parallel algorithms for CFD:an introduction ． AGARD/NATO Report R-807,1995．  [7]Siikonen T,Haffren J．A finite-volume based computer program for the two dimensional and axisymmetrical compressible flow .Report B-19. Helsinki:Helsinki University of Technology,1989．  [8]Sawley M L,Tegner J K．A comparison of parallel programming models for multiblock flow computations[J]． J Comp Phys,1995,122:280~290．  [9]孙家昶,张林波,迟学斌,等．网络并行计算与分布式编程环境[M]．北京:科学出版社,1996．
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