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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/43276

Title: An Improvement of Wave Refraction-diffraction Effect in Swan
Authors: Jaw-Guei Lin
Contributors: 國立臺灣海洋大學:河海工程學系
Keywords: wave refraction-diffraction;SWAN;higher-order bottom slopes;wave-current interaction;rapidly varying sea bottom
Date: 2013-04
Issue Date: 2017-06-15T03:05:31Z
Publisher: Journal of Marine Science and Technology
Abstract: Abstract:SWAN, a wind wave model, has been modified to take into account wave refraction-diffraction effects from the extended mild-slope equation when wind waves pass through a extremely uneven sea bottom in the presence of current. In our modified model, the diffraction correction parameter introducedby Holthuijsen et al. [10] has been adjusted to better predict the combined effect of the higher-order bottom effect, wave-bottom interaction and wave-current interaction. After a preliminary analysis, the influence of the correction parameter is discussed, and a comparison is made between the original and the new phase-decoupled versions of SWAN through some typical examples of wave fields around semiinfinite breakwaters, breakwaters with gap, and detached breakwaters on different bathymetries. The results show that the new phase-decoupled model exhibits improvements in both numerical convergence and Prediction results for the case of a steep varying an extremely uneven sea bottom than the original one.
Relation: 21(2), pp.198-208
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/43276
Appears in Collections:[河海工程學系] 期刊論文

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