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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/40046

Title: Nonlinear run-ups of regular waves on sloping structures
Authors: T.-W. Hsu;S.-J. Liang;B.-D. Young;S.-H. Ou
Contributors: 國立臺灣海洋大學:海洋環境資訊學系
Date: 2012
Issue Date: 2017-01-12T07:06:09Z
Publisher: Nat. Hazards Earth Syst. Sci.
Abstract: Abstract: For coastal risk mapping, it is extremely important to accurately predict wave run-ups since they influence overtopping calculations; however, nonlinear run-ups of regular waves on sloping structures are still not accurately modeled. We report the development of a high-order numerical model for regular waves based on the second-order nonlinear Boussinesq equations (BEs) derived by Wei et al. (1995). We calculated 160 cases of wave run-ups of nonlinear regular waves over various slope structures. Laboratory experiments were conducted in a wave flume for regular waves propagating over three plane slopes: tan alpha = 1/5, 1/4, and 1/3. The numerical results, laboratory observations, as well as previous datasets were in good agreement. We have also proposed an empirical formula of the relative run-up in terms of two parameters: the Iribarren number xi and sloping structures tan alpha. The prediction capability of the proposed formula was tested using previous data covering the range xi <= 3 and 1/5 <= tan alpha <= 1/2 and found to be acceptable. Our study serves as a stepping stone to investigate run-up predictions for irregular waves and more complex geometries of coastal structures.
Relation: 12
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/40046
Appears in Collections:[海洋環境資訊系] 期刊論文

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