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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/24645

Title: Wave Forces on Multiple Large Surface-Piercing Cylinders Mounted on Conical Shoals
Authors: Sung-Shan Hsiao;Chih-Chung Wen;Chun-Ming Chang;Chao-Lung Ting
Contributors: NTOU:Department of Harbor and River Engineering
國立臺灣海洋大學:河海工程學系
Keywords: Dual reciprocity boundary element method;wave force;modified mild-slope equation;large structure
Date: 2010-06
Issue Date: 2011-10-20T08:13:48Z
Publisher: Proceedings of the 20th International Offshore and Polar Engineering Conference
Abstract: abstract:In this investigation, we considered the wave force on multiple large surface-piercing cylinders mounted on a shoal. Instead of conventional approaches, e.g. Helmholtz equation for constant water depth or ignoring rapid undulations of the bottom the modified mild-slope equation (MMSE) was adopted to calculate the wave potential and the linear Bernoulli equation was used to estimate the wave force. About the numerical method, we employed the dual reciprocity boundary element method (DRBEM) to reduce the corresponding complicated domain integration. The numerical results were compared with the analytic solutions of Liu and Lin (2007) and MacCamy and Fuchs (1954), respectively. Comparisons between numerical results and analytic solution showed excellent agreements. We used two types of shoal with different slopes as numerical cases in this study. We also carried out numerical experiments for incident waves with normal and 45-degree angles. We found that when the length of incident wave is twice the spacing between columns, larger wave height occurs at downstream columns, because of interactions between waves and columns. The wave force oscillates in sync with incident wave.
Relation: pp.902-907
URI: http://ntour.ntou.edu.tw/handle/987654321/24645
Appears in Collections:[河海工程學系] 演講及研討會

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