基于液压负载的摆臂式波能装置CFD分析  

CFD study for swing-arm type wave energy converter based on hydraulic load

作　　者：何广华 栾政晓 张志刚 荆芃霖 HE Guanghua;LUAN Zhengxiao;ZHANG Zhigang;JING Penglin(School of Mechatronics Engineering,Harbin Institute of Technology,Harbin 150001,China;School of Ocean Engineering,Harbin Institute of Technology,Weihai 264209,Shandong China;Shandong Institute of Shipbuilding Technology,Weihai 264209,Shandong China)

机构地区：[1]哈尔滨工业大学机电工程学院,黑龙江哈尔滨150001 [2]哈尔滨工业大学(威海)海洋工程学院,山东威海264209 [3]山东船舶技术研究院,山东威海264209

出　　处：《华中科技大学学报（自然科学版）》2024年第10期60-66,共7页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：山东省泰山学者工程专项经费资助项目(tsqn201909172);山东省高等学校青年创新团队科技计划资助项目(2019KJN003);哈工大原创前沿探索基金资助项目(HIT.OCEF.2021037);国家海洋局海洋可再生能源基金资助项目(GHME2018SF02)。

摘　　要：为使研究摆臂式振荡浮子发电装置的水动力性能及输出功率更加贴近实际工程应用,应用计算流体力学方法(CFD)建立了摆臂式振荡浮子发电装置数值模型,建立了摆臂与浮子耦合模型并采用定阻力负载来模拟液压系统PTO(能量输出)中的活塞杆阻力.首先,对所建立的三维黏性数值波浪水池开展了网格和时间步收敛性验证;然后,基于重叠网格技术对摆臂式振荡浮子发电装置的不同吃水及PTO不同作用形式进行了研究;最后,分析了摆臂长度对装置水动力性能及输出功率的影响.结果表明:吃水增加可以使浮子在更短的摆臂长度下启动;在目标海况下,摆臂式振荡浮子发电装置的平均功率随着摆臂长度的增加先增大后降低,当力臂比为3.5时,总功率为10.26 kW,达到最大.To make the swing-arm type wave energy converter(WEC) closer to engineering application,a coupling numerical model of PA-WEC and the float arm was established to investigate the hydrodynamic performance and power output by utilizing computational fluid dynamics(CFD) tool.The resistance of piston in the hydraulic power take-off(PTO) system was simulated by a constant resistance load.First,the grid and time-step convergence of the numerical wave tank were verified.Then,the performances of swing-arm type WEC in different drafts and different forms of PTO were investigated based on the overset mesh technology.Finally,the influence of various float-arm lengths on the power output was analyzed.Results show that when the draught is increased,the device can be operated with a shorter float arm,and the average power output of the swing-arm type WEC first increases and then decreases with the increase of the float-arm length under the target sea state,and the maximum total power reaches its maximum of 10.26 kW when arm ratio equals to 3.5.

关 键 词：波浪能发电装置 计算流体力学 数值波浪水池 动力输出系统 模型实验 

分 类 号：TK71[动力工程及工程热物理—流体机械及工程] O327[理学—一般力学与力学基础]