A Spatial Domain Decomposition Method for Parabolic Optimal Control Problems

dc.contributor.authorHeinkenschloss, M.en_US
dc.contributor.authorHerty, M.en_US
dc.date.accessioned2018-06-18T17:56:57Zen_US
dc.date.available2018-06-18T17:56:57Zen_US
dc.date.issued2005-03en_US
dc.date.noteMarch 2005en_US
dc.description.abstractWe present a non-overlapping spatial domain decomposition method for the solution of linear-quadratic parabolic optimal control problems. The spatial domain is decomposed into non-overlapping subdomains. The original parabolic optimal control problem is decomposed into smaller problems posed on space-time cylinder subdomains with auxiliary state and adjoint variables imposed as Dirichlet boundary conditions on the space-time interface boundary. The subdomain problems are coupled through Robin transmission conditions. This leads to a Schur complement equation in which the unknowns are the auxiliary state adjoint variables on the space-time interface boundary. The Schur complement operator is the sum of space-time subdomain Schur complement operators. The application of these subdomain Schur complement operators is equivalent to the solution of an subdomain parabolic optimal control problem. The subdomain Schur complement operators are shown to be invertible and the application of their inverses is equivalent to the solution of a related subdomain parabolic optimal control problem. We introduce a new family of Neumann-Neumann type preconditioners for the Schur complement system including several different coarse grid corrections. We compare the numerical performance of our preconditioners with an alternative approach recently introduced by Benamou.en_US
dc.format.extent33 ppen_US
dc.identifier.citationHeinkenschloss, M. and Herty, M.. "A Spatial Domain Decomposition Method for Parabolic Optimal Control Problems." (2005) <a href="https://hdl.handle.net/1911/102035">https://hdl.handle.net/1911/102035</a>.en_US
dc.identifier.digitalTR05-03en_US
dc.identifier.urihttps://hdl.handle.net/1911/102035en_US
dc.language.isoengen_US
dc.titleA Spatial Domain Decomposition Method for Parabolic Optimal Control Problemsen_US
dc.typeTechnical reporten_US
dc.type.dcmiTexten_US
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