• • 上一篇    下一篇

求解Navier—Stokes方程的指数型差分法

周保民   

  1. 北京卫星信息工程研究所
  • 发布日期:1987-08-25

A DIFFERENCE PROCEDURE OF EXPONENTIAL TYPE FOR THE NAVIER—STOKES EQUATIONS

Zhou Baomin (Beijing Institute of Satfellite Information Engineering)   

  • Published:1987-08-25

摘要: 我们以Burger's方程为例,推导了指数型差分格式,并证明了这格式是无条件稳定和高精度的。此外,我们利用这格式来求解一维单个和多个Navier-Stokes方程,取得了令人满意的结果。把这格式进一步推广,得到求解二维Navier-Stokes方程组的格式,并从理论上证明了这一推广格式的一系列优点,还以此来求解实践问题,得到了与实验和理论非常符合的结果。

关键词: 气动力干扰, 有限差分理论, 计算

Abstract: A difference procedure of exponential type by the Burger's equation has been devoloped. We have also proved the unconditional stability and the high accuracy of this method. In addition, We applied it to the 1—D and the 2—D Navier-Stokes equations, also got very satisfactory results.