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Indexed by:会议论文

Date of Publication:2009-10-13

Included Journals:EI、CPCI-S、SCIE

Volume:116

Issue:1

Page Number:237-244

Key Words:Wave scattering; Fully nonlinear wave flume; HOBEM; Wave load; Higher free harmonics

Abstract:Submerged plates are widely used as breakwater device and wave energy convertor in costal and ocean engineering. It is of practical importance to account for the effects of plate on wave transformation and nonlinear wave loads on the plate. In this paper, a 2D fully nonlinear numerical wave flume is developed to investigate the nonlinear interactions between a regular wave and a submerged horizontal plate by use of a higher-order boundary element method (HOBEM) based on potential theory. An acceleration potential method is adopted to calculate the transient wave loads on the plate. The proposed model is verified against the published experimental and numerical data for nonlinear wave scattering by a submerged plate. Then numerical tests are performed to investigate the high free harmonics induced by the submerged plate and nonlinear wave loads on it. The second-order analysis shows a resonant behavior which is related to the ratio of the plate length to the second beat length. The wave-load analysis shows that the pressure on the upper surface oscillates more frequently than that on the lower surface. (C) 2015 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).