Deflated preconditioned conjugate gradient solvers for the pressure-Poisson equation: Extensions and improvements

被引：38

作者：

Loehner, Rainald ^{[1
]}

Mut, Fernando ^{[1
]}

Cebral, Juan Raul ^{[1
]}

Aubry, Romain ^{[2
]}

Houzeaux, Guillaume ^{[2
]}

机构：

[1] George Mason Univ, Coll Sci, CFD Ctr, Dept Computat & Data Sci, Fairfax, VA 22030 USA

[2] Barcelona Supercomp Ctr, Barcelona, Spain

来源：

INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING | 2011年 / 87卷 / 1-5期

关键词：

iterative solvers; conjugate gradients; pressure-Poisson equation; incompressible solvers; finite elements; CFD; EXTREME CONTRASTS; CONSTRUCTION; CONVERGENCE; PREDICTION; SYSTEM; FLOWS;

D O I：

10.1002/nme.2932

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Extensions and improvements to a deflated preconditioned conjugate gradient technique for the solution of the pressure-Poisson equation within an incompressible flow solver are described. In particular, the use of the technique for embedded grids, for cases where volume of fluid or level set schemes are required and its implementation on parallel machines are considered. Several examples are included that demonstrate a considerable reduction in the number of iterations and a remarkable insensitivity to the number of groups/regions chosen and/or to the way the groups are formed. Copyright (C) 2010 John Wiley & Sons, Ltd.

引用

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页码：2 / 14

页数：13

共 41 条

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