An energy-conserving Galerkin scheme for a class of nonlinear dispersive equations |
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Authors: | Takayasu Matsuo Hisashi Yamaguchi |
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Institution: | 1. Department of Mathematical Informatics, Graduate School of Information Science and Technology, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan;2. Chuo Mitsui Asset Trust and Banking Company, Ltd., Japan |
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Abstract: | A Galerkin scheme is presented for a class of conservative nonlinear dispersive equations, such as the Camassa–Holm equation and the regularized long wave equation. The scheme has two advantageous features: first, it is conservative in that it keeps the discrete analogue of the continuous energy conservation property in the original equations; second, it can be formulated only with cheap H1-elements even if the original equations include third derivative uxxx. Numerical experiments confirm the stability and effectiveness of the proposed scheme. |
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Keywords: | 65M60 35Q58 65P10 |
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