Numerical performance of discontinuous and stabilized continuous Galerkin methods or convection-diffusion problems
Keywords
Advanced Numerical Methods for Scientific Computing
Code:
42/2011
Title:
Numerical performance of discontinuous and stabilized continuous Galerkin methods or convection-diffusion problems
Date:
Sunday 27th November 2011
Author(s):
Antonietti, P.F.; Quarteroni, A.
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Abstract:
We compare the performance of two classes of numerical methods for the approximation of linear steady-state convection-diffusion equations, namely, the discontinuous Galerkin (DG) method and the continuous streamline upwind Petrov-Galerkin (SUPG) method. We present a fair comparison of such schemes considering both diffusion--dominated and convection-dominated regimes, and present numerical results obtained on a series of test problems including smooth solutions, and test cases with sharp internal and boundary layers.