叶片材料及根部结构对潮流能水轮机性能的影响  

The influence of blades material and roots structure on the performance of tidal current turbine

作　　者：林奇峰[1] 周大庆[1] 赵文龙[1] 

机构地区：[1]河海大学能源与电气学院,江苏南京210000

出　　处：《可再生能源》2017年第4期627-632,共6页Renewable Energy Resources

基　　金：国家自然科学基金项目(51339005)

摘　　要：转轮叶片材料及根部结构对潮流能水轮机水力性能和结构性能有较大影响。文章基于CFD方法对转轮直径为2 m,3种叶片根部方案的潮流能水轮机在不同来流速度工况下的水力性能进行了稳态数值模拟,计算结果表明,当来流速度为4 m/s,采用根部方案2时,机组达到最高效率73.39%。在此基础上,利用单向流固耦合的方法计算分析了该根部方案下采用4种不同材料转轮叶片的结构性能,分析结果表明,叶片采用结构钢、碳纤维HexMC和碳纤维RTP-1389时,最大应力均为130 MPa,未超过许可应力强度,结构钢最大总形变为6.55 mm,玻璃纤维最大总形变为104.72 mm。The material and the root structure of runner blades have a great impact on hydraulic and structural performance of a tidal current power turbine. This paper simulates the hydraulic performance of a 2-meter runner diameter tidal turbine with three different blade root schemes at different flow rates by steady state CFD numerical method. The results show that the hydraulic efficiency reaches the peak of 73.39% when the root scheme 2 is used and the flow rate is 4 m/s. In addition, one way fluid-structure interaction is applied to analyze the structural performance of runner blades made of four materials,which are structural steel, carbon fiber Hex MC, and carbon fiber RTP-1389, under the root scheme 2.The result shows that the maximum stress is 130 MPa under four material conditions, which does not exceed the required stress. In addition, the maximum total deformation are 6.55 mm and 104.72 mm for structural steel and glass fiber accordingly.

关 键 词：潮流能水轮机 材料 根部结构 CFD 单向流固耦合 

分 类 号：TK6[动力工程及工程热物理—生物能] P743.2[天文地球—海洋科学]