计算物理 ›› 2004, Vol. 21 ›› Issue (2): 149-155.

• 研究论文 • 上一篇    下一篇

非静力模式中三维网格的计算特性

刘宇迪1,2   

  1. 1. 中国科学院大气物理研究所LASG, 北京 100029;
    2. 解放军理工大学气象学院, 江苏 南京 211101
  • 收稿日期:2002-10-09 修回日期:2003-04-12 出版日期:2004-03-25 发布日期:2004-03-25
  • 作者简介:刘宇迪(1971-),男,内蒙古,副教授,博士,从事计算流体力学和海洋遥感及资料同化方面的研究,解放军理工大学气象学院89#,211101
  • 基金资助:
    中国科学院大气物理研究所LASG开放课题资助项目

Numerical Properties of 3D Grids in a Nonhydrostatic Model

LIU Yu-di1,2   

  1. 1. State Key Laboratory Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, China Academy Sciences, Beijing 100029, China;
    2. Institute of Meteorology, PLA University of Science and Technology, Nanjing 211101, China
  • Received:2002-10-09 Revised:2003-04-12 Online:2004-03-25 Published:2004-03-25

摘要: 在线性斜压非静力滞弹性方程组的基础上,从频率和群速方面讨论了10种三维网格的计算频散性,结果表明三维网格EL/CP、C/CP与Z/LZ计算频散性能较好.从而为非静力原始方程大气模式选取三维网格提供指导.

关键词: 非静力模式, 三维网格, 频率, 群速

Abstract: In the framework of linear baroclinic nonhydrostatic anelastic equations,calculation is undertaken for dispersions of inertia gravitational waves in different kinds of 3D(three-dimensional) grids from the perspective of frequency and group velocity, indicating that such 3D structures as EL/CP, C/CP and Z/LZ are superior to others in the computational dispersion properties, thereby providing a guidance to the selection of 3D grids applicable to atmospheric primitive equation nonhydrostatic models.

Key words: nonhydrostatic model, 3D grids, frequency, group velocity

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