计算物理 ›› 1991, Vol. 8 ›› Issue (3): 287-294.

• 论文 • 上一篇    下一篇

气动计算中色散可控的迎风紧致格式

马延文, 傅德薰   

  1. 中国科学院力学所, 非线性连续介质力学开放实验室, 北京 100080
  • 收稿日期:1990-10-17 出版日期:1991-09-25 发布日期:1991-09-25
  • 基金资助:
    国家自然科学基金

UPWIND COMPACT SCHEME WITH DISPERSION CONTROLLING FOR THE AERODYNAMIC EQUATIONS

Ma Yanwen, Fu Dexun   

  1. Academy of Science, Institute of Mechanics
  • Received:1990-10-17 Online:1991-09-25 Published:1991-09-25

摘要: 文中通过对修正方程色散项的耗散类比方法,指出该项在改善数值解中非物理振荡的重要作用,给出了一类依赖于三个自由参量的色散可控迎风紧致格式。通过这三个参量可控制耗散量的大小,也可控制色散量的大小及方向,并给出了一个具体的色散协调因子。文中给出的格式有着精度高、方法简单、计算量小和有着强的对激波的捕捉能力等优点。对二维激波反射问题进行了数值实验。计算结果非常令人满意。

关键词: 数值模拟, 激波捕促, 紧致格式

Abstract: A upwind compact scheme with dispersion regulator is developed and discussed. The scheme developed is dissipative and the dispersion term in the truncation error can be controlled. According to the behaviour of the flow parameters near the shock the scheme with specially chosen control function gives high resolution. The scheme is simple, efficient and the shock can be captured well. The scheme is used to compute the shock reflection problem, and the computed results are satisfactory.

Key words: numerical simulation, shock capturing, compact scheme