A stabilized Galerkin method for convection dominated diffusion problems

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Abstract

We describe a new method for solving convection dominated diffusion problems. The idea of the method is that the standard unstable symmetric (or Bubnov-Galerkin) finite-element discretization can be stabilized by a suitable extension of the test space. This results in an overdetermined linear system, to be solved in least squares sense. Both QR-factorization and preconditioned conjugate gradients applied to the normal equations are feasible as solution method. Although the discretization is derived by a conforming method, the normal equations show resemblance to a discretization by the (nonconforming) streamline-upwind/Petrov-Galerkin method. We shall display a number of examples and a comparison to SU/PG. © 1989.

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de Groen, P. P. N., & van Veldhuizen, M. (1989). A stabilized Galerkin method for convection dominated diffusion problems. Journal of Computational and Applied Mathematics, 28(C), 155–162. https://doi.org/10.1016/0377-0427(89)90327-0

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