Assessment of open boundary conditions on the elliptic formulation of the mild-slope equation |
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| Authors: | Filipa Simes Brito Ferreira Oliveira |
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| Institution: | Laboratório Nacional de Engenharia Civil, Av. do Brasil 101, 1700-066, Lisboa, Portugal |
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| Abstract: | The performance of open boundaries in a finite differences scheme of the elliptic mild-slope equation is assessed. The wave propagation results show that lowest order parabolic radiation boundary conditions, unlike sponge layers combined with first order radiation boundary conditions, are an efficient alternative to first order radiation boundary conditions in order to improve the accuracy of the numerical solution of the problem. |
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| Keywords: | Radiation boundary conditions Sponge layers Boundary value problem Mild-slope equation Wave propagation |
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