標題: Numerical solution for the second-order wave interaction with porous structures
作者: Hsu, HH
Wu, YC
土木工程學系
Department of Civil Engineering
關鍵字: boundary element method;porous structure;reflection coefficient;transmission coefficient
公開日期: 15-二月-1999
摘要: This study mathematically formulates the fluid field of a water-wave interaction with a porous structure as a two-dimensional, non-linear boundary value problem (bvp) in terms of a generalized velocity potential. The non-linear bvp is reformulated into an infinite set of linear bvps of ascending order by Stokes perturbation technique, with wave steepness as the perturbation parameter. Only the first- and second-order linear bvps are retained in this study. Each linear bvp is transformed into a boundary integral equation. In addition, the boundary element method (BEM) with linear elements is developed and applied to solve the first- and second-order integral equations. The first- and second-order wave profiles, reflection and transmission coefficients, and the amplitude ratio of the second-order components are computed as well. The numerical results correlate well with previous analytical and experimental results. Numerical results demonstrate that the second-order component can be neglected for a deep water-wave and may become significant for an intermediate depth wave. Copyright (C) 1999 John Wiley & Sons, Ltd.
URI: http://hdl.handle.net/11536/31518
http://dx.doi.org/10.1002/(SICI)1097-0363(19990215)29:3<265
ISSN: 0271-2091
DOI: 10.1002/(SICI)1097-0363(19990215)29:3<265
期刊: INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS
Volume: 29
Issue: 3
起始頁: 265
結束頁: 288
顯示於類別:期刊論文


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