计算物理 ›› 1998, Vol. 15 ›› Issue (5): 531-536.

• 论文 • 上一篇    下一篇

求解双曲型守恒律方程的高精度迎风紧致群速度控制法

朱庆勇, 马延文   

  1. LNM, 中国科学院力学所, 北京 100080
  • 收稿日期:1997-02-01 修回日期:1998-05-05 出版日期:1998-09-25 发布日期:1998-09-25
  • 作者简介:朱庆勇,男,28,博士,广州市中山大学科学计算与计算机应用系510275
  • 基金资助:
    本工作得到国家自然科学基金重大项目资助

A HIGH ORDER ACCURATE UPWIND COMPACT SCHEME WITH GROUP VELOCITY CONTROL FOR SOLVING HYPERBOLIC CONSERVATION LAWS

Zhu Qingyong, Ma Yanwen   

  1. LNM, Institute of Mechanics, Chineses Academy of Sciences, Beijing 100080
  • Received:1997-02-01 Revised:1998-05-05 Online:1998-09-25 Published:1998-09-25

摘要: 从迎风紧致逼进[1]出发,提出求解流体力学双曲型守恒律的一种高精度的数值方法,同时采用群速度控制方法捕捉激波。该方法在光滑区具有三阶精度。

关键词: 群速度控制法, 迎风紧致格式, 双曲守恒律, Euler方程

Abstract: A high order accurate finite difference scheme is proposed in light of the upwind compact method[1].The flux vectors in Euler equations are approximated by using upwind compact difference.In order to prevent the nonphysical oscillations in the vicinity of the shock the group velocity control(GVC)method is used.The reason of oscillation production in numerical solutions is nonuniformity of group velocity of wave packets.GVC is for improvement of the shock resolution.The present scheme has third order accruracy in smooth regions.

Key words: GVC, upwind compact scheme, hyperbolic conservation laws, Euler equations

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