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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
On selection of interface weights in domain decomposition methods
 Čertíková, M. ; Šístek, Jakub ; Burda, P.
Different choices of the averaging operator within the BDDC method are compared on a series of 2D experiments. Subdomains with irregular interface and with jumps in material coefficients are included into the study. Two new approaches are studied along three standard choices. No approach is shown to be universally superior to others, and the resulting recommendation is that an actual method should be chosen based on properties of the problem.
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Some remarks on averaging in the BDDC method
 Čertíková, M. ; Burda, P. ; Novotný, J. ; Šístek, Jakub
In this paper, we introduce a general framework for derivation of the averaging operator, from hich the standard choices are recovered by simplifications. Then, an alternative approach derived by another simplification is proposed and tested on a 2D example.
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