A posteriori optimization of parameters in stabilized methods for convection-diffusion problems --- Part I
- John, Volker
- Knobloch, Petr
- Savescu, Simona B.
2010 Mathematics Subject Classification
- convection-diffusion problems, stabilized finite element methods, parameter optimization, SUPG method, residual-based error estimator
Stabilized finite element methods for convection-dominated problems require the choice of appropriate stabilization parameters. From numerical analysis, often only their asymptotic values are known. This paper presents a general framework for optimizing the stabilization parameters with respect to the minimization of a target functional. Exemplarily, this framework is applied to the SUPG finite element method and the minimization of a residual-based error estimator and error indicator. Benefits of the basic approach are shown and further improvements are discussed.
- Comput. Methods Appl. Mech. Engrg., 200 (2011) pp. 2916--2929.