Different approaches to interface weights in the BDDC method in 3D

0443847 - MÚ 2016 RIV CZ eng C - Conference Paper (international conference)
Čertíková, M. - Šístek, Jakub - Burda, P.
Different approaches to interface weights in the BDDC method in 3D.
Programs and algorithms of numerical mathematics 17. Proceedings of seminar. Praha: Matematický ústav AV ČR, v.v.i, 2015 - (Chleboun, J.; Přikryl, P.; Segeth, K.; Šístek, J.; Vejchodský, T.), s. 47-57. ISBN 978-80-85823-64-6.
[Programs and Algorithms of Numerical Mathematics /17./. Dolní Maxov (CZ), 08.06.2014-13.06.2014]
R&D Projects: GA ČR GA14-02067S
Institutional support: RVO:67985840
Keywords : BDDC * interface weights * coefficient jumps
Subject RIV: BA - General Mathematics
http://hdl.handle.net/10338.dmlcz/702662

In this paper, we discuss the choice of weights in averaging of local (subdomain) solutions on the interface for the BDDC method (Balancing Domain Decomposition by Constraints). We try to find relations among different choices of the interface weights and compare them numerically on model problems of the Poisson equation and linear elasticity in 3D. Problems with jumps in coefficients of material properties are considered and both regular and irregular interfaces between subdomains are tested.
Permanent Link: http://hdl.handle.net/11104/0246498