沉箱基础对摇板式波浪能装置水动力性能影响研究  

Study on the effect of caisson foundation on the hydrodynamic performance of flap wave energy device

作　　者：汪俊有 李爱军 刘勇[1] WANG Junyou;LI Aijun;LIU Yong(Shandong Provincial Key Laboratory of Ocean Engineering,Ocean University of China,Qingdao 266100,China)

机构地区：[1]中国海洋大学山东省海洋工程重点实验室,山东青岛266100

出　　处：《海洋工程》2021年第3期109-117,共9页The Ocean Engineering

基　　金：国家自然科学基金项目(51725903);山东省泰山学者建设工程(TS20190915)。

摘　　要：摇板式波浪能转换装置具有频率响应范围广、可靠性好、常规海况下转换效率高、建造成本低等优点。基于势流理论建立具有沉箱基础的摇板式波浪能装置水动力性能的解析解。将解析结果与文献中已有结果和边界元数值结果进行了对比,验证了解析解求解过程的正确性。通过算例分析,研究了波浪入射频率、沉箱基础高度、沉箱基础宽度、摇板位置、摇板厚度和摇板密度对装置能量俘获效率的影响。研究结果表明:采用合适高度的沉箱基础能显著提升装置性能;长波海况下,摇板铰接在沉箱基础背浪侧上表面时装置性能更佳,而短波海况下,摇板铰接在沉箱基础迎浪侧上表面更为合理;沉箱基础宽度的推荐值为0.5到1.0倍水深;适当减小摇板厚度能够提升装置性能;应优先选用密度较大的摇板。Flap wave energy device has the advantages of wide frequency response range,good reliability,high conversion efficiency under conventional sea conditions,and low engineering cost.In the context of linear potential theory,this study develops an analytical solution for the hydrodynamic performance of flap wave energy device hinged on a rectangular caisson foundation.The correctness of the analytical solution is validated by comparing the present results with previous results in literature and numerical results of the boundary element method(BEM)solution.Calculation examples are presented to examine the effects of major parameters,including the incident wave frequency,the height and width of the caisson,the position,thickness and density of the flap,on the capture efficiency of the wave energy device.The analysis results show that the caisson foundation with an appropriate height can significantly improve the device performance.In the case of long⁃wave sea conditions,the device performance is better when the flap is hinged to the leeside upper surface of the caisson foundation,while in the case of short⁃wave sea conditions,it is more reasonable to hinge the flap on the seaside upper surface of the caisson foundation.The recommended value of the caisson foundation width is 0.5 to 1.0 times water depth.In addition,properly decreasing the flap thickness and increasing the flap density both can improve the device performance.

关 键 词：沉箱基础 摇板 波浪能 解析解 俘获效率 

分 类 号：P743.2[天文地球—海洋科学]