航空学报 > 1990, Vol. 11 Issue (9): 510-514

旋成体零攻角纵向大扰动势流的AF-2迭代及其并行算法

闵赛金1, 李秀英1, 罗时钧2   

  1. 1. 国防科技大学 ;2. 西北工业大学
  • 收稿日期:1989-05-20 修回日期:1990-01-20 出版日期:1990-09-25 发布日期:1990-09-25

AF 2 ITERATION AND ITS PARALLEL ALGORITHM FOR TRANSONIC FLOW WITH LARGE DISTURBANCES IN FREESTREAM-DIRECTION AROUND AXISYMMETRIC BODIES AT ZERO ANGLE OF ATTACK

Min Saijin, Li Xiuying, Luo Shijun1   

  1. 1. National Uriversity of Defence Technology;2. Northwestern Polytechnical University
  • Received:1989-05-20 Revised:1990-01-20 Online:1990-09-25 Published:1990-09-25

摘要: <正> 1.引言 为提高跨音速差分计算效率,人们在计算格式的设计、改进方面做了大量的工作,并取得了可喜的成就。并行计算机的出现和发展,使我们有可能进一步提高计算效率。第9期阂赛金等:旋成体零攻角纵向大扰动势流的人F一2迭代及其并行算法A弓n因为并行处理机具有处理数据能力强、计算效益高的特点,但这种机器必须结合具体问题和机器特点加以考虑才能发挥其优势。目前,利用我国设计的“YH一1”(“银河一1”)亿次并行处理机,开展跨音速差分计算的并行算法研究具有理论和运用上的重要意义

关键词: 轴对称体, 跨音速流, 位流, 数值计算

Abstract: The calculations of AF-2 scheme are made by serial algorithm and parallel algorithm on computer''Yinhe-l"for solving axisymme-trical transonic potential equation with large disturbances in the freestream direction and small disturbance in the radial direction. By computations, the convergence of AF-2 is compared with that of SLOR, and the efficiency for parallel algorithm of AF-2 is compared with the efficiency for serial algorithm. Results indicate rhat A.F-2 technique has led to a 3-7 fold improvement in convergence against SLOR. and the computation efficiency by the parallel algorithm of AF-2 is about 3 times higher than that by the serial algorithm of AF-2.

Key words: axisymmetric bodies, transonic flow, potential flow, ngmerical caacnlation