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The wave transmission characteristics and wave induced pressures on twin plate breakwater are investigated experimentally in regular and random waves.A total of twenty pressure transducers are fixed on four surfaces of twin plate to measure the wave induced dynamic pressures.The spatial distribution of dynamic wave pressure is given along the surface of the twin plate.The uplift wave force obtained by integrating the hydrodynamic pressure along the structure is presented.Discussed are the influence of different incident wave parameters including the relative plate width B /L,relative wave height /i H a and relative submergence depth s /a on the non-dimensional dynamic wave pressures and total wave forces.From the investigation,it is found that the optimum transmission coefficient,t K occurs around B /L 0.41 ~ 0.43,and the twin plate breakwater is more effective in different water depths.The maximum of pressure ratio decreases from 1.8 to 1.1 when the relative submergence depth of top plate is increased from 0.8to +0.8. 相似文献
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Numerical Simulation of Waves Interaction with A Submerged Horizontal Twin-Plate Breakwater 总被引：3，自引：1，他引：2
The numerical investigation of regular waves interacting with a submerged horizontal twin-plate breakwater is presented in this paper. A numerical model with an absorbing wave-maker is established based on the VOF method. The validity of the model is verified by experimental results. Comparisons between the numerical and experimental results show that both the water surface profiles and the wave-induced pressures can be modeled accurately. Wave deformation over the breakwater,water particle velocities aroun... 相似文献
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研究风暴潮期间的增水过程、振幅和时相特征对提高风暴潮实时预报的精度和减轻灾害损失具有重要价值。采用径流、潮汐、风、波浪耦合模型模拟了孟加拉湾1991-2020年期间对湾顶布里斯瓦尔河口一带增水影响最大的28次热带气旋过程。结果显示,由风暴潮总水位减去天文潮位得到的总增水极值相对于天文潮高潮位的出现时刻集中于涨潮阶段,占总次数的89.3%,并且集中于高潮位前的3 h和4 h。增水过程呈现“（准）孤立波”和“（准）周期性振动”两大类型,其中孤立波形式的增水过程有的在涨潮阶段便完成,也有的持续一个完整的涨、落潮阶段。风暴潮增水-天文潮相互作用曲线具有与天文潮同样周期的振动特征,其振幅与潮差的大小相关,呈现出“涨峰-落谷”与“涨谷-落峰”两种类型,二者具有180°的相位差。热带气旋的行进方向与潮流同逆向、登陆时的潮相、海岸陷波（边缘波）的形成与传播等是决定总增水极值时相特征的主要动力机制。 相似文献
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