Kornhuber, R. and Gräser, C. (2007) On preconditioned Uzawatype iterations for a saddle point problem with inequality constraints. In: Decomposition Methods in Science and Engineering XVI. LNCSE (55). Springer, pp. 91102. ISBN 9783540344698

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Abstract
We consider preconditioned Uzawa iterations for a saddle point Problem with inequality constraints as arising from an implicit time discretization of the CahnHilliard equation with obstacle potential. We present a new class of preconditioners based on linear Schur complements associated with successive approximations of the coincidence set. In numerical experiments, we found superlinear convergence and finite termination.
Item Type:  Book Section 

Subjects:  Mathematical and Computer Sciences > Mathematics 
Divisions:  Department of Mathematics and Computer Science > Institute of Mathematics 
ID Code:  1711 
Deposited By:  Sabrina Nordt 
Deposited On:  24 Aug 2015 10:11 
Last Modified:  03 Mar 2017 14:41 
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