吃水深度对双浮体波浪能转换装置影响分析  

EFFECT OF DRAFT ON THE POWER ABSORPTION IN A TWO-BODY ROLLING WECS

作　　者：王晓明[1] 尚建忠[1] 张志雄[1] 杨政[1] 

机构地区：[1]国防科技大学机电工程与自动化学院,长沙410073

出　　处：《太阳能学报》2013年第7期1264-1270,共7页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(50875254)

摘　　要：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。The two-body rolling wave energy conversion system （WECS） utilizes relative rolling motion between the upper buoy on the surface and the lower buoy beneath the water was proposed. It is aimed to solve the power supply for small unmanned vehicles in waters. The mathematical model was established and simplified, to obtain a model ＂upper buoy ＆ PTO device＂ . Several key factors were discussed, and the rolling natural frequency is one of them. The parameters to affect the natural frequency were analyzed, such as the G. C position arrangement and draft design. The draft design was specially analyzed through numerical simulation, to find out the influence on the system. The results showed that draft design does affect the WECS＇ s power absorption by controlling the natural frequency of the upper buoy.

关 键 词：横摇运动 双浮体波浪能转换装置 长峰不规则波 吃水深度 横摇固有频率 

分 类 号：TK01[动力工程及工程热物理]