Navier-Stokes equations;
Mixed element method;
The Arrow-Hurwicz method;
Convergence rate analysis;
SADDLE-POINT PROBLEMS;
ELEMENT METHODS;
D O I:
10.1016/j.cam.2016.07.010
中图分类号:
O29 [应用数学];
学科分类号:
070104 ;
摘要:
This article is devoted to analyzing an Arrow-Hurwicz type method for solving incompressible Navier-Stokes equations discretized by mixed element methods. Under several reasonable conditions, it is proved by a subtle argument that the method converges geometrically with a contraction number independent of the finite element mesh size h, even for regular triangulations. A series of numerical examples are provided to illustrate the computational performance of the method. (C) 2016 Elsevier B.V. All rights reserved.