Mandel, JanSousedík, BedřichŠístek, Jakub2021-10-272021-10-272011-04-21Mandel, Jan; Sousedík, Bedřich; Šístek, Jakub; Adaptive BDDC in three dimensions; Mathematics and Computers in Simulation, Volume 82, Issue 10, Pages 1812-1831, 21 April, 2011; https://doi.org/10.1016/j.matcom.2011.03.014https://doi.org/10.1016/j.matcom.2011.03.014http://hdl.handle.net/11603/23164The 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 pagesen-USThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.Text