Adaptive BDDC in Three Dimensions
arXiv:0910.5863 · doi:10.1016/j.matcom.2011.03.014
Abstract
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.
28 pages, 9 figures, 9 tables