筏式波浪能装置波能转换液压能效率的数值研究  

Numerical study on conversion efficiency from wave energy to hydraulic energy by raft-type wave energy convertors

作　　者：陈文创 张永良[1] 

机构地区：[1]清华大学水利水电工程系,水沙科学与水利水电工程国家重点实验室,北京100084

出　　处：《水力发电学报》2013年第5期191-196,共6页Journal of Hydroelectric Engineering

基　　金：水沙科学与水利水电工程国家重点实验室自主课题资助(2013-KY-3);国家自然科学基金(51079072;51279088);863计划(2012AA052602);清华大学自主科研计划资助(20101081791)

摘　　要：现有筏式波浪能转换装置的研究,集中于针对大西洋沿岸欧洲海域,尚未有针对中国海域特点的应用成果。中国海域与欧洲海域的波况相比具有波周期短和波高小的特点,需要设计一个适用于短周期和小波高条件下的筏式波浪能发电装置,使其在中国海域中实现较高波能转换液压能的效率。为此,结合中国海况特点,基于一阶斯托克斯波理论和牛顿运动方程,对椭圆截面发电浮体装置的波能转换液压能效率进行数值模拟研究,该研究采用速度势、结构运动方程和流体-结构界面的耦合条件来计算压力场和速度场,分析了波浪周期和波高对浮体筒波浪能转换液压能效率的影响,并优化了一个典型中国海域波况条件下的筏式装置。Currently wave energy convertors （WEC） are studied and applied mainly to European seas around the Atlantic Ocean rather than the China seas. Waves in the China seas have shorter periods and smaller heights than those in the European seas and this is why we should study a raft-type WEC to he used in the China seas and a numerical stu the light of the achieve high conversion efficiency from wave energy to hydraulic energy. For this purpose, of energy conversion efficiency was conducted for a raft type WEC with oval cross section in aracteristics of Chinese waters. In this study, the potential flow theory of first-order Stokes wave, Newton＇s equation of motion and coupling conditions on fluid-structure interfaces were used and velocity and pressure fields were calculated. The effects of wave period and wave height on the conversion efficiency were analyzed and the wave energy convertors were optimized for typical wave conditions in the China seas.

关 键 词：波浪水力学 波浪能 筏式波浪能转换装置 液压能 转换效率 

分 类 号：P743.2[天文地球—海洋科学]