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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/43620

Title: Applicable sloping range and bottom smoothing treatment for sigma-based modeling of wave propagation over rapidly varying topography.
Authors: Chih-Chieh Young;wei-ting Chao;Chao-Lung Ting
Contributors: 國立臺灣海洋大學:海洋環境資訊學系
Date: 2016-08
Issue Date: 2017-10-19T03:29:17Z
Publisher: Ocean Engineering
Abstract: Abstract:Accurate modeling of nonlinear wave propagation over mildly or rapidly varying topography is an important topic in costal/ocean engineering. This study examines the applicable sloping ranges and proposes a bottom smoothing treatment for the -based modeling framework. An efficient non-hydrostatic sigma model is chosen to be validated against a series of experiments with various slopes from 1:20 to 1:∞. The measured and simulated free surface time series are compared and analyzed using both one- and two-dimensional short-time Fourier transform. The reflection rate and high harmonic generation including a recurrence behavior are characterized and discussed. Overall, the excellent agreement reveals the applicability of the -based model along with an appropriate 1: 0.5 virtual slope to the wave problems with vertical (or extremely steep) bottom topography.
Relation: 31
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/43620
Appears in Collections:[海洋環境資訊系] 期刊論文

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