稳态不可压N-S方程的一个耦合边界条件

Coupled boundary condition for the steady incompressible N-S equations

利用Ｎａｖｉｅｒ－Ｓｔｏｋｅｓ（Ｎ－Ｓ）方程与Ｏｓｅｅｎ方程的耦合，设计出了原始变量下稳态不可压Ｎ－Ｓ方程在出流边界上的一个耦合边界条件。数值结果表明，耦合边界条件比Ｄｉｒｉｃｈｌｅｔ边界条件要精确得多。

A coupled boundary condition.at outflow boundary is designed for the steady incompressible Navier-Stokes equations written in the velocity-pressure formulation by using coupling between Navier-Stokes equations and Oseen equations. Numerical result shows that the coupled boundary condition is more accurate than the Dirichlet boundary condition.