期刊
JOURNAL OF COMPUTATIONAL PHYSICS
卷 227, 期 24, 页码 10196-10208出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcp.2008.08.025
关键词
Conjugate gradients; Pressure-Poisson equation; incompressible flow solvers; Finite elements; CFD
资金
- DTRA
A deflated preconditioned conjugate gradient technique has been developed for the solution of the Pressure-Poisson equation within an incompressible flow solver. The deflation is done using a region-based decomposition of the unknowns, making it extremely simple to implement. The procedure has shown a considerable reduction in the number of iterations. For grids with large graph-depth the savings exceed an order of magnitude. Furthermore, the technique has shown a remarkable insensitivity to the number of groups/regions chosen, and to the way the groups are formed. (C) 2008 Published by Elsevier Inc.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据