计算物理 ›› 1997, Vol. 14 ›› Issue (S1): 438-439,437.

• 论文 • 上一篇    下一篇

多水平方法在二维山丘地形大气污染物扩散的数值模式的应用

周振中1, 陈历舒2   

  1. 1. 湖南省计算所, 长沙 410012;
    2. 湖南省气象科学研究所, 长沙 410007
  • 收稿日期:1997-02-28 出版日期:1997-12-25 发布日期:1997-12-25

THE APPLICATION OF NUMERICAL MODEL OF DIFFUSION OF ATMOSPHERE POLLUTION IN TWO DIMENSIONAL MOUNTAIN DISTRICT WITH THE MULTI-LEVEL METHOD

Zhou Zhenzhong1, Chen Lishu2   

  1. 1. Hunan Institute of Computational Technology, Changsha 410012;
    2. Hunan Institute of Atmosphere Science
  • Received:1997-02-28 Online:1997-12-25 Published:1997-12-25

摘要: 对海风热力内边界层模式稍作修改后,不仅可模拟海风流场,也可以模拟河谷中的风场。在模拟河谷地区风场的实例计算中,数值计算结果和实测值基本符合。将多水平方法中用得最多的PCG方法(预条件共轭梯度法)用来数值解由海风热力内边界层模式离散后得到的线代数方程组,节省了计算时间。

关键词: 海风热力内边界层, 数值模拟, PCG法

Abstract: With some improvements,the model of Interior Boundary Layer in heating power of Sea wind.Can simulate not only the field of sea wind,but also the flow field of river valley.The numerical computational results are consistent with the values of observation.This paper also brings the discussion on practical application of the preconditional Conjugate Gradient Method (PCG) that is most frequantly used in Multi-level Methods to solve the linear algebra equations,which result from the numerical approximation of Interior Boundary Layer in heating power of sea wind.The Computational time has been shown reduced considenablely.

Key words: interior boundary layer in heating power of sea wind, numerical simulation, preconditioned conjugate gradient method

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