A novel flexible foil vertical axis turbine for river, ocean, and tidal applications
A novel flexible foil vertical axis turbine for river, ocean, and tidal applications
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DOI：
10.1016/j.apenergy.2015.04.005
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发表时间：
2015-08
期刊：
影响因子：
11.2
通讯作者：
Dag Herman Zeiner-Gundersen
中科院分区：
文献类型：
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作者：
Dag Herman Zeiner-Gundersen
大多数流体动力垂直轴涡轮机概念使用具有主动可调桨距的实心叶片。这些涡轮机通常需要外部启动或主动变桨机构来克服其有限的启动性能。本文从水生生物的水动力推力特性出发，设计了一种结构简单、成本低廉的柔性翼型垂直轴涡轮机。在挪威的受控河流环境中对全尺寸涡轮机进行了测试。该涡轮机的高坚固性、具有自调节外倾角的柔性翼片以及叶片和臂连接件上的枢轴和弹簧布置实现了以下功能：降低涡轮机振动、动态翼片调节、被动叶片变桨动作以及转速相对于来流速度的有限变化。这些新颖的方面导致了高性能涡轮机，其在受限通道中获得高达0.37的功率系数，并且可以在低流入水速度下自启动。
Most hydrodynamic vertical axis turbine concepts use solid blades with active adjustable pitch. These turbines generally need external starting or active pitching mechanisms to overcome their limited starting performance. In this study, a simple and cost-effective vertical axis turbine with flexible foils was designed based on inspiration from hydrodynamic thrust characteristics of aquatic creatures. A full-scale turbine was tested in a controlled river environment in Norway. The turbine’s high solidity, flexible foils with self-adjustable cambering, and pivot and spring arrangements on the blade and arm connections enabled the following: reduced turbine vibrations, dynamic foil adjustments, a passive blade pitch action, and limited variation in rotational speed versus incoming flow velocity. These novel aspects resulted in a high performance turbine that attained up to a 0.37 power coefficient in a confined channel and could self-start at low inflow water velocities.