A stabilized Galerkin method for convection dominated diffusion problems

  • de Groen P
  • van Veldhuizen M
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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.

Author-supplied keywords

  • Convection
  • diffusion

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  • P. P.N. de Groen

  • M. van Veldhuizen

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