期刊
SIAM JOURNAL ON SCIENTIFIC COMPUTING
卷 41, 期 3, 页码 B425-B447出版社
SIAM PUBLICATIONS
DOI: 10.1137/17M1132562
关键词
static condensation; hybridization; algebraic multigrid; ADS; H(div) solvers; radiation-diffusion transport
资金
- U.S. Department of Energy by Lawrence Livermore National Laboratory [DE-AC52-07NA27344]
- U.S. Department of Energy, Office of Science, Office of Advanced Scientific Computing Research, Applied Mathematics program [LLNL-JRNL-732140]
We propose a unified algebraic approach for the practical application and preconditioning of static condensation and hybridization, two popular techniques in finite element discretizations. We demonstrate the use of this algebraic framework for the construction of scalable solvers for problems involving H(div)-spaces discretized by conforming (Raviart-Thomas) elements of arbitrary order. We illustrate through numerical experiments the relative performance of the two (in some sense dual) techniques in comparison with a state-of-the-art parallel solver, ADS [T. V. Kolev and P. S. Vassilevski, SIAM J. Sci. Comput., 34 (2012), pp. A3079-A3098], available at http://www.llnl.gov/casc/hypre and http://mfem.org. Based on these results, we recommend the use of the hybridization technique in practice, due to its clearly demonstrated superior performance with increased benefit for higher-order elements.
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