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Laboratory Study on the Interaction Between Regular Obliquely Incident Waves and vertical walls

China Ocean Engineering 2001年第2期16卷 195-203页

作者：李玉成董国海孙昭晨徐双全毛恺牛恩宗 The State Key Laboratory of Coastal and Offshore Engineering Dalian University of Technology Dalian 116024 China The Planning and Design Institute of Water Transportation Beijing 100080 China

The characteristics of wave forces are studied based on physical model tests with regular waves. The ratio of obliquely incident wave forces to normally incident wave forces on unit length of a vertical wall is related with various factors. A linear reduction of the mean force of obliquely incident waves is confirmed with an increase in the relative caisson length. Also the characteristics of reflection coefficient of diagonal waves are discussed.

关键词： diagonal waves vertical walls wave forces interaction regular incident wave

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Three - dimensional numerical simulation of oblique wave action on vertical walls

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Acta Oceanologica Sinica 2006年第1期25卷 147-153页

作者： LI Benxia YU Xiping YU Yuxiu Department of Hydraulic Engineering Tsinghua University Beijing 100084 China State Key Laboratory of Coastal and Offshore Engineering Dalian University of Technology Dalian 116024 China

A three-dimensional numerical model based on the potential theory was developed to study the oblique wave action on vertical walls. A source term inside the domain was used to generate incident waves and outgoing waves were dissipated by sponge layers and transmitted by radiation boundaries. The finite difference method was used to solve the governing equations and boundary conditions in the regular transformed domain in σ-coordinate. Satisfactory agreements between the numerical predictions and experimental results of wave force were obtained. It is concluded that the maximum wave force acting on the vertical walls is induced by the obliquely incident waves rather than the normally incident waves.

关键词： oblique waves vertical walls wave action potential theory

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Wave Forces Acting on vertical walls

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China Ocean Engineering 2008年第1期22卷 151-160页

作者：李本霞俞聿修余锡平 National Marine Environmental Forcasting Center State Key Laboratory of Coastal and Offshore Engineering Dalian University of Technology Department of Hydraulic Engineering Tsinghua University

Regular and irregular wave forces acting on vertical walls are studied by a previously developed numerical model. The computed wave forces are compared with the available experimental data to verify the numerical model, and satisfactory agreements are obtained. The variation of wave forces with incident angles and the shape of simultaneous pressure distribution are investigated, and the comparisons between numerical results and Goda＇ s predictions are also carried out. It is concluded that the maximum wave forces acting on the unit length of vertical wall is often induced by the obliquely incident waves instead of normally incident waves, while Goda＇ s formula may be inapplicable for oblique wave incidence. The shape of simultaneous pressure distribution is not significantly influenced by incident angles, and it can be favorably predicted by Goda＇ s formula. When regular wave heights are taken as the same as irregular wave height H1%, the irregular wave forces Ph. 1% are slightly larger than regular wave forces in most cases.

关键词： wave forces vertical walls simultaneous pressure distribution obliquely incident waves

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