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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50650

Title: Wave refraction–diffraction effect in the wind wave model WWM
Authors: Jian-Ming Liau
Aaron Roland
Tai-Wen Hsu
Shan-Hwei Ou
Yi-Ting Li
Contributors: 國立臺灣海洋大學:河海工程學系
Keywords: Wave refraction–diffraction
Wave reflection
Phase-decoupled wave model
Higher-order bottom components
Wave–current interaction
Date: 2011-06
Issue Date: 2018-10-19T07:55:05Z
Publisher: Coastal Engineering
Abstract: Abstract: Based on the extended mild-slope equation, the wind wave model (WWM; Hsu et al., 2005) is modified to account for wave refraction, diffraction and reflection for wind waves propagating over a rapidly varying seabed in the presence of current. The combined effect of the higher-order bottom effect terms is incorporated into the wave action balance equation through the correction of the wavenumber and propagation velocities using a refraction–diffraction correction parameter. The relative importance of additional terms including higher-order bottom components, the wave–bottom interaction source term and wave–current interaction that influence the refraction–diffraction correction parameter is discussed. The applicability of the proposed model to calculate a wave transformation over an elliptic shoal, a series of parallel submerged breakwater induced Bragg scattering and wave–current interaction is evaluated. Numerical results show that the present model provides better predictions of the wave amplitude as compared with the phase-decoupled model of Holthuijsen et al. (2003).
Relation: Coastal Engineering
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50650
Appears in Collections:[河海工程學系] 期刊論文

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