The SIPG method of Dirichlet boundary optimal control problems with weakly imposed boundary conditions

ÇÖREKLİ Ç.

AIMS MATHEMATICS, cilt.7, sa.4, ss.6711-6742, 2022 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 7 Sayı: 4
  • Basım Tarihi: 2022
  • Doi Numarası: 10.3934/math.2022375
  • Dergi Adı: AIMS MATHEMATICS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Social Sciences Citation Index (SSCI), Scopus, Directory of Open Access Journals
  • Sayfa Sayıları: ss.6711-6742
  • Anahtar Kelimeler: finite elements, discontinuous Galerkin methods, SIPG method, Dirichlet boundary, transposition method, optimal control, stabilized methods, DISCONTINUOUS GALERKIN METHODS, ERROR ANALYSIS, APPROXIMATION, FORMULATION, FLOWS
  • Recep Tayyip Erdoğan Üniversitesi Adresli: Evet

Özet

In this paper, we consider the symmetric interior penalty Galerkin (SIPG) method which is one of Discontinuous Galerkin Methods for the Dirichlet optimal control problems governed by linear advection-diffusion-reaction equation on a convex polygonal domain and the difficulties which we faced while solving this problem numerically. Since standard Galerkin methods have failed when the boundary layers have occurred and advection diffusion has dominated, these difficulties can occur in the cases of higher order elements and non smooth Dirichlet data in using standard finite elements. We find the most convenient natural setting of Dirichlet boundary control problem for the Laplacian and the advection diffusion reaction equations.After converting the continuous problem to an optimization problem, we solve it by "discretize-then-optimize" approach. In final, we estimate the optimal priori error estimates in suitable norms of the solutions and then support the result and the features of the method with numerical examples on the different kinds of domain.