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Analytical and Experimental Study of Focused Wave Action on a Partially Immersed Box

机译：部分浸入箱上聚焦波动作用的分析与实验研究

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摘要

Focused wave is a practical laboratory method for reproducing extreme waves that cause catastrophic damage to marine and coastal structures. This paper presents a simple and efficient analytical method for predicting the hydrodynamic pressure and wave forces acting on a partially immersed box when subjected to a focused wave group attack. The boundary value issue of the physical problem is first investigated to derive an analytical formula based on potential flow theory and the matching eigenfunction method. Thereafter, the test data from a hydrodynamic experiment is used to verify the accuracy of the proposed analytical model. Using the validated analytical model, a parametric analysis is conducted to gain insight into the effects of the structural configuration and wave properties on the pressure and wave forces. It is observed that the hydrodynamic pressure on the offshore side plate, horizontal wave force, and moment are notably influenced by the structure breadth and draft. A focused wave with a lower peak frequency and higher focused amplitude is found to exert greater wave forces on the partially immersed box. The paper shows the value of linear wave theory for wave loads prediction even for focused waves although with some limitations.
机译：聚焦波是一种再现极端波浪对海洋和沿海结构造成灾难性损害的实际实验室方法。本文提出了一种简单有效的分析方法，用于预测当经受聚焦波组攻击时在部分浸没箱上作用的流体动力压力和波力。首先研究了物理问题的边界值问题以导出基于潜在流动理论和匹配的特征函数方法的分析公式。此后，来自流体动力学实验的测试数据用于验证所提出的分析模型的准确性。使用经过验证的分析模型，进行了参数分析，以了解结构配置和波形对压力和波力的影响。观察到近海侧板，水平波力和时刻的流体动力学压力尤其受到结构宽度和草案的影响。发现具有较低峰值频率和更高聚焦幅度的聚焦波在部分浸入的盒子上施加更大的波力。本文表明，即使对于聚焦波，线性波理论的线性波理论的价值也是为了聚焦波，尽管有一些限制。

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  • 来源
    《Mathematical Problems in Engineering》 |2019年第13期|9850302.1-9850302.15|共15页
  • 作者

    Fang Qinghe; Guo Anxin;

  • 作者单位

    Harbin Inst Technol Sch Civil Engn Minist Educ Key Lab Struct Dynam Behav & Control Harbin 150090 Heilongjiang Peoples R China|Harbin Inst Technol Minist Ind & Informat Technol Key Lab Smart Prevent & Mitigat Civil Engn Disast Harbin 150090 Heilongjiang Peoples R China|Univ Manchester Sch Mech Aerosp & Civil Engn Manchester M13 9PL Lancs England;

    Harbin Inst Technol Sch Civil Engn Minist Educ Key Lab Struct Dynam Behav & Control Harbin 150090 Heilongjiang Peoples R China|Harbin Inst Technol Minist Ind & Informat Technol Key Lab Smart Prevent & Mitigat Civil Engn Disast Harbin 150090 Heilongjiang Peoples R China;

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