ADAPTIVE SYMMETRIC INTERIOR PENALTY GALERKIN METHOD FOR BOUNDARY CONTROL PROBLEMS


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BENNER P., Yuecel H.

SIAM JOURNAL ON NUMERICAL ANALYSIS, cilt.55, ss.1101-1133, 2017 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 55 Konu: 2
  • Basım Tarihi: 2017
  • Doi Numarası: 10.1137/15m1034507
  • Dergi Adı: SIAM JOURNAL ON NUMERICAL ANALYSIS
  • Sayfa Sayıları: ss.1101-1133

Özet

We investigate an a posteriori error analysis of adaptive finite element approximations of linear-quadratic boundary optimal control problems under bilateral box constraints, which act on a Neumann boundary control. We use a symmetric interior Galerkin method as discretization technique. An efficient and reliable residual-type error estimator is introduced by invoking data oscillations. We then derive local upper and lower a posteriori error estimates for the boundary control problem. Adaptive mesh refinement indicated by a posteriori error estimates is applied. Numerical results are presented to illustrate the performance of the adaptive finite element approximation.