计算物理 ›› 1985, Vol. 2 ›› Issue (2): 129-136.

• 论文 •    下一篇

数值求解Navier-Stokes方程的一个新的系数矩阵分裂法

马延文, 傅德薰   

  1. 北京空气动力研究所
  • 收稿日期:1984-11-19 出版日期:1985-06-25 发布日期:1985-06-25

A NEW IMPLICIT FACTORED SCHEME FOR THE NAVIER-STOKES EQUATIONS

Ma Yan-wen, Fu De-xun   

  1. Beijing Institute of Aerodynamics
  • Received:1984-11-19 Online:1985-06-25 Published:1985-06-25

摘要: 在一个单步格式的基础上构造了一个新的隐式系数矩阵分裂法来数值求解可压Navier-St-okes方程。对方程中的无粘项部分利用守恒型方程中流通量向量为一齐次函数这一特性,根据Jacobian矩阵特征值的符号而将流通向量分裂成两部分。在此基础上据风向而构造逼近于无粘项的差分格式。对方程中的粘性项部分利用算子附加修正的方法来改进计算的收敛过程。所建立的差分格式被用来数值求解Couette流以考查这一方法。

Abstract: A new implicit factored difference scheme for solving compressible Navier-Stokes equations on the base of the single step scheme developed before is described in this paper. For the inviscid portion of the Navier-stokes equations the flux vectors are split according to the sign of the eigenvalues of the Jacobian matrices using the property that the nonlinear flux vectors are homogeneous functions of degree one. For the viscous portion correction with operator the addition is used for improving convergence rate. Obtained difference scheme is used to solve Couette flow.