A new combined finite element-upwind finite volume method for convection-dominated diffusion problems
| Autor: | Cheng Wang, Mingyan He, Pengtao Sun |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Numerical Analysis
Constant coefficients Finite volume method Applied Mathematics Mathematical analysis Upwind differencing scheme for convection Upwind scheme 010103 numerical & computational mathematics Finite volume method for one-dimensional steady state diffusion Mixed finite element method 01 natural sciences Finite element method 010101 applied mathematics Computational Mathematics 0101 mathematics Analysis Extended finite element method Mathematics |
| Zdroj: | Numerical Methods for Partial Differential Equations. 32:799-818 |
| ISSN: | 0749-159X |
| DOI: | 10.1002/num.22027 |
| Popis: | In this article, we develop a combined finite element-weighted upwind finite volume method for convection-dominated diffusion problems in two dimensions, which discretizes the diffusion term with the standard finite element scheme, and the convection and source terms with the weighted upwind finite volume scheme. The developed method leads to a totally new scheme for convection-dominated problems, which overcomes numerical oscillation, avoids numerical dispersion, and has high-order accuracy. Stability analyses of the scheme are given for the problems with constant coefficients. Numerical experiments are presented to illustrate the stability and optimal convergence of our proposed method.© 2015 Wiley Periodicals, Inc. Numer Methods Partial Differential Eq, 2015 |
| Databáze: | OpenAIRE |
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