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

0443847 - MÚ 2016 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
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]
Grant CEP: GA ČR GA14-02067S
Institucionální podpora: RVO:67985840
Klíčová slova: BDDC * interface weights * coefficient jumps
Kód oboru RIV: BA - Obecná matematika
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.
Trvalý link: http://hdl.handle.net/11104/0246498