A splitting preconditioner for the incompressible navier–stokes equations

Mathematical Modelling and Analysis

Ze-Jun Hu¹  Ting-Zhu Huang¹  Ning-Bo Tan¹ 

[1] University of Electronic Science and Technology of China Chengdu, 611731 Sichuan, China;

关键词: saddle point problem;    Krylov subspace method;    splitting preconditioner;   

DOI  :  10.3846/13926292.2013.868839

来源: DOAJ

【 摘 要 】

In this paper, a splitting preconditioner based on the relaxed dimensional factorization (RDF) preconditioner and the modified augmented Lagrangian (MAL) preconditioner for the incompressible Navier–Stokes equations is presented. The preconditioned matrix is analyzed, and similar results arising from the RDF and the MAL preconditioners are obtained. The corresponding details of the spectrum analysis are given. Finally, we compare the three preconditioners and numerical experiments are implemented by using the IFISS package.

【 授权许可】

Unknown