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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/24627

Title: Influence of Reflecting Boundaries on Waves in a Harbor
Authors: Sung-Shan Hsiao;Hui-Ming Fang;Yun-Chih Chiang
Contributors: NTOU:Department of Harbor and River Engineering
Date: 2011-06
Issue Date: 2011-10-20T08:13:30Z
Publisher: International Journal of Offshore and Polar Engineering
Abstract: Abstract:Reflection characteristics of solid boundaries are important parameters when using numerical simulation to study harbor tranquility. Incorrect treatments of the reflection characteristics can result in an erroneous amplification curve for the harbor. This study investigates harbor reflection experimentally and numerically. In particular, we study frequency-dependent reflection characteristics of the quay-wall in a harbor by performing a series of laboratory experiments using porous quaywalls with various porosities and wall thicknesses. Experimental results of the frequency-dependent wave reflection coefficients are then introduced into numerical models of harbor tranquility to treat the boundary reflecting problem. Simulation results show that the reflection coefficient significantly influenced the wave amplification curve and resonant wave period. Also, the energy dissipation efficiency of the quay-wall on waves seems to be overestimated when the quay-wall’s reflection coefficients are treated as a constant. This study also shows that using experimentally derived reflection coefficients for the present numerical wave model is a rational approach to studying harbor resonance.
Relation: 21(2), pp.121-128
URI: http://ntour.ntou.edu.tw/handle/987654321/24627
Appears in Collections:[河海工程學系] 期刊論文

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