计算物理 ›› 1994, Vol. 11 ›› Issue (1): 45-50.

• 论文 • 上一篇    下一篇

对称TVD差分格式的构造及其应用

陆夕云, 庄礼贤, 童秉纲   

  1. 中国科学技术大学近代力学系, 合肥 230026
  • 收稿日期:1992-07-03 修回日期:1993-04-02 出版日期:1994-03-25 发布日期:1994-03-25

CONSTRUCTION OF SYMMETRIC TVD SCHEMES AND THEIR APPLICATIONS

Lu Xiyun, Zhuang Lixian, Tong Binggang   

  1. University of Science and Technology of China, Hefei, Anhui, 230026
  • Received:1992-07-03 Revised:1993-04-02 Online:1994-03-25 Published:1994-03-25

摘要: 本文从GCIR差分格式出发,通过附加中心加权形式的反扩散流量,构造出一类具有二阶精度的对称型TVD格式以及相应的一般形式的隐式格式,并针对双曲型方程组问题进行了讨论。同时文中还采用这类格式求解Euler方程,成功地数值计算了具有激波的流动问题。

关键词: 差分格式, 数值方法

Abstract: A class of second-order explicit and implicit symmetric total variation diminishing (TVD) schemes is constructed for the computation of weak solutions of hyperbolic conservation laws.The resulting scheme can be viewed as a limited anti-diffusive flux, that is centered weighted flux, to add to a first-order GCIR scheme. Numerical experiments for solving the Euler equations for capturing shock waves show that the symmetric TVD schemes are quite robust and accurate.

Key words: difference scheme, numerical method