计算物理 ›› 1987, Vol. 4 ›› Issue (1): 79-84.

• 论文 • 上一篇    下一篇

求解Euter方程组的一种简单的守恒误差

王红云   

  1. 北京大学数学系
  • 收稿日期:1986-11-15 出版日期:1987-03-25 发布日期:1987-03-25

A SIMPLE CONSERVATIVE DIFFERENCE SCHEME FOR SOLVING FULL EULER EQUATIONS

Wang Hong-Yun   

  1. Department of Mathematics, Peking University
  • Received:1986-11-15 Online:1987-03-25 Published:1987-03-25

摘要: 本文提出了一种解一维不定常Euler方程组的较简单的一阶,二阶守恒差分格式,一阶格式简称为FUDE(First-Order UPwind Difference Scheme for Euler Equations),二阶格式简记为SUDE。本文的格式避免了大的数值振荡及膨胀激波,同时计算量较MacCormack[1]格式仅略有增加,文中若干数值试验表明本文格式的分辨率是令人满意的。

Abstract: We Propose here both first and second order explicit conservative difference schemes to solve1-D unsteady full Euler equations.As comPared with early schemes like MacCormack[1] etc., these proposed schemes can prevent the occurence of nonphysical expansion shock and oscillation while the computing time is increased only a little bit.A series of numerical tests shows satisfactory qualities of these schemes.