{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,21]],"date-time":"2026-08-21T16:18:19Z","timestamp":1787329099308,"version":"build-2736575974"},"reference-count":31,"publisher":"Society for Industrial & Applied Mathematics (SIAM)","issue":"6","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["SIAM J. Numer. Anal."],"published-print":{"date-parts":[[2010,1]]},"abstract":"<jats:p>We derive local error estimates for the discretization of optimal control problems governed by linear advection-diffusion partial differential equations (PDEs) using the streamline upwind\/Petrov Galerkin (SUPG) stabilized finite element method. We show that if the SUPG method is used to solve optimization problems governed by an advection-dominated PDE, the convergence properties of the SUPG method is substantially different from the convergence properties of the SUPG method applied for the solution of an advection-dominated PDE. The reason is that the solution of the optimal control problem involves another advection-dominated PDE, the so-called adjoint equation, whose advection field is just the negative of the advection of the governing PDEs. For the solution of the optimal control problem, a coupled system involving both the original governing PDE as well as the adjoint PDE must be solved. We show that in the presence of a boundary layer, the local error between the solution of the SUPG discretized optimal control problem and the solution of the infinite dimensional problem is only of first order even if the error is computed locally in a region away from the boundary layer. In the presence of interior layers, we prove optimal convergence rates for the local error in a region away from the layer between the solution of the SUPG discretized optimal control problems and the solution of the infinite dimensional problem. Numerical examples are presented to illustrate some of the theoretical results.<\/jats:p>","DOI":"10.1137\/090759902","type":"journal-article","created":{"date-parts":[[2010,2,19]],"date-time":"2010-02-19T18:11:59Z","timestamp":1266603119000},"page":"4607-4638","source":"Crossref","is-referenced-by-count":47,"title":["Local Error Estimates for SUPG Solutions of Advection-Dominated Elliptic Linear-Quadratic Optimal Control Problems"],"prefix":"10.1137","volume":"47","author":[{"given":"Matthias","family":"Heinkenschloss","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dmitriy","family":"Leykekhman","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"351","published-online":{"date-parts":[[2010,2,19]]},"reference":[{"key":"R1","doi-asserted-by":"publisher","DOI":"10.1016\/j.finel.2004.06.001"},{"key":"R2","doi-asserted-by":"publisher","DOI":"10.1007\/BF01436920"},{"key":"R3","doi-asserted-by":"publisher","DOI":"10.1137\/080719583"},{"key":"R4","doi-asserted-by":"publisher","DOI":"10.1007\/s00211-007-0067-0"},{"key":"R5","doi-asserted-by":"publisher","DOI":"10.1137\/060653494"},{"key":"R6","doi-asserted-by":"publisher","DOI":"10.1016\/0045-7825(82)90071-8"},{"key":"R7","doi-asserted-by":"crossref","unstructured":"P. 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Leykekhman,\n                      Local error estimates for supg solutions of advection-dominated elliptic linear-quadratic optimal control problems\n                      , Technical report TR08-30, Department of Computational and Applied Mathematics, Rice University, Houston, TX, 2008."},{"key":"R13","first-page":"237","volume":"27","author":"Hinze M.","year":"2009","journal-title":"J. Comput. Math.","ISSN":"https:\/\/id.crossref.org\/issn\/0254-9409","issn-type":"print"},{"key":"R14","doi-asserted-by":"crossref","unstructured":"C. Johnson and U. N\u00e4vert,\n                      An analysis of some finite element methods for advection-dffusion problems\n                      , in Analytical and Numerical Approaches to Asymptotic Problems in Analysis, S. Axelsson, L. S. 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