鳍形浮子多自由度水动力性能研究  

Multi-degree-of-freedom hydrodynamic performance study of finned floats

作　　者：张伟 任增源 许依凡 张彪 李德堂 李昊[1] ZHANG Wei;REN Zengyuan;XU Yifan;ZHANG Biao;LI Detang;LI Hao(School of Electrical and Mechanical Engineering,Shandong Jianzhu University,Jinan 250101,China;School of Naval Architecture and Mechanical-Electrical Engineering,Zhejiang Ocean University,Zhoushan 316022,China)

机构地区：[1]山东建筑大学机电工程学院,山东济南250101 [2]浙江海洋大学船舶与机电工程学院,浙江舟山316022

出　　处：《中国舰船研究》2024年第4期156-166,共11页Chinese Journal of Ship Research

基　　金：中国博士后科学基金资助项目(2023M733286);山东省自然科学基金青年基金资助项目(ZR2020QE299)。

摘　　要：[目的]为优化摇臂式波浪能装置的能量俘获(俘能)效果,针对平台支柱分流方案与浮子形状对装置俘能效果影响进行研究。[方法]首先,建立浮子运动的水动力学模型;然后,利用AQWA仿真软件,对平台支柱不同分流方案的多种鳍形浮子的水动力特性进行计算分析,得到鳍形浮子的波浪合力、幅值响应算子、附加质量及辐射阻尼等频域参数,以及位移、速度、加速度及激振力等时域参数;最后,研究平台支柱不同分流方案的各鳍形浮子的俘能宽度比。[结果]结果表明:不同平台支柱分流方案对鳍形浮子的频域参数影响较小,对时域参数的浮子运动位移影响较小,但对运动周期影响较大;双柱分流方案的100°时鳍形浮子的俘能效果最优。[结论]基于所建立的仿真数值模型能够准确模拟多自由度鳍形浮子在波浪运动中的水动力学响应,可为振荡浮子式波浪能发电平台浮子形状的优化设计提供参考。[Objective]To optimize the energy capture efficiency of a rocker-type wave energy converter,the effects of the platform pillar wave diversion scheme and shape of finned floats on energy capture are studied.[Methods]First,a hydrodynamic model of float motion is established.Next,the hydrodynamic characteristics of different finned floats are calculated using AQWA software and analyzed under different platform pillar wave diversion schemes,different frequency domain parameters such as added mass,radiation damping,wave excitation force and response amplitude operator(RAO),and different time domain parameters such as displacement,velocity,acceleration and excitation force.Finally,the energy-capture width ratios of different finned floats under different platform pillar wave diversion schemes are investigated.[Results]The results show that different platform pillar wave diversion schemes have little effect on the frequency domain parameters of the finned floats or the float motion displacement of time domain parameters,but a large effect on the motion period.Energy capture is optimal at a fin angle of 100°under the double-pillar wave diversion scheme.[Conclusions]Based on the proposed numerical simulation model,the hydrodynamic response of multi-degree-of-freedom finned floats in wave motion can be simulated accurately,providing useful references for the optimized design of the float shape for oscillating float-type wave energy generation platforms.

关 键 词：鳍形浮子 平台支柱分流 频域分析 时域分析 水动力分析 

分 类 号：U656.2[交通运输工程—港口、海岸及近海工程] TM612[交通运输工程—船舶与海洋工程]