Enhancing Performance of a Horizontal Axis Tidal Turbine using Adaptive Blades
Enhancing Performance of a Horizontal Axis Tidal Turbine using Adaptive Blades
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使用自适应叶片增强水平轴潮汐涡轮机的性能
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
S. Turnock
中科院分区：
文献类型：
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作者：
R. Nicholls;S. Turnock
自由流潮汐涡轮机是海洋可再生能源领域日益受到关注的一个来源。一些设计使用变桨距叶片控制装置，以最大限度地提高涡轮机的效率；然而，在海底设备所经历的恶劣负载条件下，这些装置的设计、建造和维护都很复杂。自适应材料已被用于风电行业，以制造弯扭耦合叶片，以努力使涡轮机效率越来越接近贝茨极限，并增加年度能量捕获。这项工作包括一项可行性研究，重点是水动力性能计算，其中叶片几何形状被人为地重新配置为流速的函数。并对叶片的压力分布进行了分析。被动自适应潮汐涡轮叶片的概念被证明可以增加每年的能量捕获，减少叶片负荷和延迟空化开始。
Free stream tidal turbines are a source of growing interest in the marine renewable energy field. Some designs use variable pitch blade control devices in order to maximize the efficiency of the turbines; however these are complex to design, construct and maintain under the severe load conditions sub sea devices experience. Adaptive materials have been used in the wind industry to create bend-twist coupled blades in an effort to bring turbine efficiency ever closer to the Betz limit, and increase annual energy capture. This work encompasses a feasibility study, focusing on hydrodynamic performance calculations, wherein the blade geometry is artificially reconfigured as a function of flow velocity. The pressure distribution over the blade is also analysed. The concept of a passively adaptive tidal turbine blade is shown to increase annual energy capture, reduce blade loading and delay cavitation inception.