A Schwarz Preconditioner for a Hybridized Mixed Method

Verfasser / Beitragende:
[Jayadeep Gopalakrishnan]
Ort, Verlag, Jahr:
2003
Enthalten in:
Computational Methods in Applied Mathematics, 3/1(2003), 116-134
Format:
Artikel (online)
ID: 378860151
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024 7 0 |a 10.2478/cmam-2003-0009  |2 doi 
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100 1 |a Gopalakrishnan  |D Jayadeep  |u Department of Mathematics, University of Florida, Gainesville, Florida 32611-8105 
245 1 2 |a A Schwarz Preconditioner for a Hybridized Mixed Method  |h [Elektronische Daten]  |c [Jayadeep Gopalakrishnan] 
520 3 |a In this paper, we provide a Schwarz preconditioner for the hybridized versions of the Raviart-Thomas and Brezzi-Douglas-Marini mixed methods. The preconditioner is for the linear equation for Lagrange multipliers arrived at by eliminating the flux as well as the primal variable. We also prove a condition number estimate for this equation when no preconditioner is used. Although preconditioners for the lowest-order case of the Raviart-Thomas method have been constructed previously by exploiting its connection with a nonconforming method, our approach is different in that we use a new variational characterization of the Lagrange multiplier equation. This allows us to precondition even the higher-order cases of these methods. 
540 |a This article is distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. 
690 7 |a hybridized mixed method  |2 nationallicence 
690 7 |a Raviart-Thomas method  |2 nationallicence 
690 7 |a Brezzi-Douglas-Marini method  |2 nationallicence 
690 7 |a Schwarz domain decomposition  |2 nationallicence 
690 7 |a preconditioner  |2 nationallicence 
690 7 |a two-level method  |2 nationallicence 
773 0 |t Computational Methods in Applied Mathematics  |d De Gruyter  |g 3/1(2003), 116-134  |x 1609-4840  |q 3:1<116  |1 2003  |2 3  |o cmam 
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950 |B NATIONALLICENCE  |P 100  |E 1-  |a Gopalakrishnan  |D Jayadeep  |u Department of Mathematics, University of Florida, Gainesville, Florida 32611-8105 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Computational Methods in Applied Mathematics  |d De Gruyter  |g 3/1(2003), 116-134  |x 1609-4840  |q 3:1<116  |1 2003  |2 3  |o cmam 
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