基于AQWA的波浪能发电装置主浮体水动力特性研究

利用水动力计算软件AQWA对双浮体式振荡浮子波浪能发电装置主浮体进行仿真分析,对不同尺寸垂荡板的主浮体进行建模仿真,并就各自RAOs、激振力、附加阻尼和附加质量进行频域分析。结果表明,在波浪频率低于0.3 Hz时,垂荡板尺寸对其影响尤为明显;当波浪频率分别大于0.2 Hz、0.36 Hz和0.35 Hz时,垂荡板尺寸分别对RAOs、激振力和附加阻尼失去影响;对于同一吃水线、不同垂荡板尺寸的主浮体,波浪频率对其附加质量有较大影响,且垂荡板尺寸越大影响越严重。

Hydrodynamic analysis of the floating body of an oscillating buoy wave power device based on AQWA

A simulation analysis of the floating body of a double floater wave energy converter is conduct based on the AQWA. The models of the floating body with different sizes heave-plates are built and the RAOs, exciting force, added mass and radiation damping forces of different floating bodies are contrasted in the frequency domain. The results show that when the wave frequency is lower than 0.3Hz, the size of the heave-plate has great influence on parameters of the floating body. While the impacts of heave-plate on RAOs, exciting force and radiation damping forces would be little when wave frequency under 0.2Hz, 0.36Hz and 0.35Hz. For the same drift line, the size of the heave-plate has great influence and with the increasing of the size, the influence would get greater.