arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0910.5863math.NAcs.NA
收藏

三维自适应BDDC方法

Adaptive BDDC in Three Dimensions

University of Colorado Denver(科罗拉多大学丹佛分校);Institute of Thermomechanics, Academy of Sciences of the Czech Republic(捷克科学院热力学研究所);Institute of Mathematics, Academy of Sciences of the Czech Republic(捷克科学院数学研究所);Czech Technical University in Prague(布拉格捷克理工大学)

Jan Mandel, Bedřich Sousedík, Jakub Šístek

AI总结:

将自适应BDDC方法扩展到三维面约束选择,提出基于全局公式的新实现,通过多波前求解器实现大规模并行,并用投影和广义变量替换保持稀疏性,在多个工程问题上验证有效性。

摘要:

自适应BDDC方法被扩展到三维中面约束的选择。提出了一种基于全局公式的BDDC方法新实现,无需显式粗问题,通过多波前求解器提供大规模并行性。约束通过投影实现,并通过广义变量替换保持投影算子的稀疏性。在多个工程问题上说明了该方法的有效性。

英文摘要:

The adaptive BDDC method is extended to the selection of face constraints in three dimensions. A new implementation of the BDDC method is presented based on a global formulation without an explicit coarse problem, with massive parallelism provided by a multifrontal solver. Constraints are implemented by a projection and sparsity of the projected operator is preserved by a generalized change of variables. The effectiveness of the method is illustrated on several engineering problems.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑