计算物理 ›› 2003, Vol. 20 ›› Issue (4): 311-314.

• 论文 • 上一篇    下一篇

两类差分格式在锋生数值模拟中的应用比较

季仲贞, 杨宏伟, 王斌   

  1. LASG,巾国科学院大气物理研究所, 北京 100029
  • 收稿日期:2002-05-20 修回日期:2002-08-25 出版日期:2003-07-25 发布日期:2003-07-25
  • 作者简介:季仲贞(1940-),舅,福建浦城,研究员,从事计算地球流体力学研究.
  • 基金资助:
    国家重点基础研究发展规划项目(编号G1999032801)资助项目

Comparison and Application of Two Kinds of Finite Difference Scheme in Frontogenesis Simulation

JI Zhong-zhen, YANG Hong-wei, WANG Bin   

  1. LASG, Institute of Atmospheric Physics of Chinese Academy of Sciences, Beijing 100029, China
  • Received:2002-05-20 Revised:2002-08-25 Online:2003-07-25 Published:2003-07-25

摘要: 在二维理想锋生数值模式的基础上,用两类差分格式进行数值试验比较.计算结果表明,无论是在大气数值模拟中广泛使用的总能量守恒型差分格式,还是在高速流中捕捉接触间断较好的反扩散格式,对锋生过程均有较好的模拟能力,反扩散格式的效果更好一些.

关键词: 锋生, 数值模拟, 反扩散格式, 守恒格式

Abstract: Based on the model of ideal frontogenesis in two dimensions, two kinds of finite difference scheme is tested. One scheme is a total energy conservation scheme that is used widely in atmosphere simulation, and the other one is an artificial compression method (ACM) that is used to capture the contact discontinuity in high-speed flows. Both of them have great abilities to simulate frontogenesis. But the effect of the ACM is better than the other to some extent.

Key words: frontogenesis, numerical simulation, ACM, conservation scheme

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