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  4. Edge stabilization for the generalized Stokes problem: A continuous interior penalty method
 
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Edge stabilization for the generalized Stokes problem: A continuous interior penalty method

Burman, Erik  
•
Hansbo, Peter
2006
Computer Methods in Applied Mechanics and Engineering

In this note we introduce and analyze a stabilized finite element method for the generalized Stokes equation. Stability is obtained by adding a least squares penalization of the gradient jumps across element boundaries. The method can be seen as a higher order version of the Brezzi-Pitkaranta penalty stabilization [F. Brezzi, J. Pitkaranta, On the stabilization of finite element approximations of the Stokes equations, in: W. Hackbusch (Ed.), Efficient Solution of Elliptic Systems, Vieweg, 1984], but gives better resolution on the boundary for the Stokes equation than does classical Galerkin least-squares formulation. We prove optimal and quasi-optimal convergence properties for Stokes' problem and for the porous media models of Darcy and Brinkman. Some numerical examples are given. [All rights reserved Elsevier]

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