A new combined finite element‐upwind finite volume method for convection‐dominated diffusion problems |
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| Authors: | Cheng Wang Mingyan He Pengtao Sun |
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| Institution: | 1. Department of Mathematics, Tongji University, Shanghai, People's Republic of China;2. School of Science, Hangzhou Dianzi University, Hangzhou, People's Republic of China;3. Department of Mathematical Sciences, University of Nevada Las Vegas, Las Vegas, Nevada |
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| Abstract: | 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 32: 799–818, 2016 |
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| Keywords: | convection‐dominated high‐order accuracy numerical experiments stability weighted upwind finite volume method |
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