计算物理 ›› 1992, Vol. 9 ›› Issue (4): 382-386.

• 论文 • 上一篇    下一篇

任意非正交坐标系统中对流扩散问题的数值计算

陈汉平, 石正军   

  1. 上海交通大学动力机械工程系, 200030
  • 收稿日期:1992-04-27 出版日期:1992-12-25 发布日期:1992-12-25

NUMERICAL ANALYSIS OF CONVECTION AND DIFFUSION IN ARBITRARY NONORTHOGONAL COORDINATES

Chen Hanping, Shi Zhengjun   

  1. Shanghai Jiaotong University, 200030
  • Received:1992-04-27 Online:1992-12-25 Published:1992-12-25

摘要: 本文导出了三维非正交坐标系中对流扩散通用微分方程的有限控制体积分表达式,其中取控制体界面曲线坐标分速为对流输运速度,取控制体中心直角坐标分速为动量方程主变量。最后给出了二维偏心环和三维偏心球复杂几何域内的自然对流算例。

关键词: 数值计算, 贴体非正交, 有限控制体法, 对流扩散, 自然对流, 偏心球

Abstract: In the paper the finite control volume integral formulation are derived in three dimensional nonorthogonal coordinates. The curved coordinate velocities on the control volume surface are taken as conveying ones and the Cartesian coordinate velocities at the center of the control volume as the variables of momentum equation. As an example, natural convection are calculated in two and three dimensional domains of eccentric cylinders and spheres.

Key words: numerical analysis, body fitted nonorthogonal coordinates, finite control volume, convection and diffusion, natural convection, eccentric sphere