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提出一种利用水面浮体和水下浮体相对横摇运动的双浮体波浪能转换装置,目的是为解决小型水下/水面移动设备的能量供给问题。其中,作为波浪能吸收主要载体的水面浮体的设计至关重要。通过建立该装置的数学模型并简化,得到“水面浮体+能量输出装置”模型;对影响简化模型中的关键因素进行讨论,确定以横摇固有频率作为研究重点,并对影响固有频率的因素进行分析,包括重心布置和吃水深度的设计。采用数值分析的方法,研究简化模型在长峰不规则波下的能量吸收情况,并重点讨论吃水深度对所提出的波浪能装置的影响。数值分析表明,水面浮体的吃水深度影响着装置的波浪能吸收能力以及能量输出装置的选择,合理的吃水深度可提高装置的波浪能吸收能力。
A dual floating body wave energy conversion device that utilizes the relative rolling motion of a surface floating body and an underwater floating body is proposed to solve the energy supply problem of a small underwater / surface moving equipment. Among them, the design of the surface buoy, which is the main carrier of wave energy absorption, is of crucial importance. Through the establishment of the mathematical model of the device and its simplification, a model of “floating body + energy output device” is obtained; the key factors affecting the simplified model are discussed, and the natural frequency of rolling is taken as the research focus, and the influence of the natural frequency Factors are analyzed, including the design of the center of gravity and draft depth. The energy absorption of simplified model under irregular wave of Changfeng is studied by means of numerical analysis and the influence of draft on the proposed wave energy device is discussed. Numerical analysis shows that the depth of draft of the water body affects the wave absorption ability of the device and the selection of the energy output device. A reasonable draft depth can improve the wave absorption capacity of the device.