计算物理 ›› 1993, Vol. 10 ›› Issue (3): 352-358.

• 论文 • 上一篇    下一篇

二维有限分析系数的近似计算

张世雄   

  1. 水利水电科学研究院, 北京 100038
  • 收稿日期:1992-04-05 修回日期:1993-01-18 出版日期:1993-09-25 发布日期:1993-09-25

TWO-DIMENSIONAL APPROXIMATE FINITE ANALYTIC COEFFICIENTS

Zhang Shixiong   

  1. Institute of Water Conservency and Hydroelectric Power Research, Beijing 100038
  • Received:1992-04-05 Revised:1993-01-18 Online:1993-09-25 Published:1993-09-25

摘要: 有限分析法是一种有效的用于流体计算的数值方法。但是用传统方法来计算有限分析系数相当繁琐、耗时,在有些情况下不够准确甚至完全失真。本文给出一个近似公式,利用它可很方便地求出有限分析系数,误差在0.003以内。

关键词: 有限分析法, 近似公式, 对流扩散方程

Abstract: The Finite Analytic Method (FA)is an efficient numerical method to solve the fluid flow problems . However, the calculation of Finite Analytic Coefficients by the conventional method is bored and time consuming . Moreover,in some extreme cases the resulted coefficients may become totally erroneous. This paper presents an approximate formula to determine FA coefficients . which is convenient to use. The error caused by the approximaion is less then 0.003.

Key words: Finite Analytic Method, approximate formula, convection-diffusion equation