新型竖直轴海洋能发电设备叶片的优化与仿真

为深入了解新型竖直轴海洋能发电设备的性能,对其叶片结构的流场特性和设备在流场中的动力收集特性进行仿真研究.建立不同结构叶片和不同数量叶片的二维模型,通过仿真计算,得到不同结构叶片的流场状态,以及叶片数分别为3、4和6时设备的合力和转矩大小.研究结果表明:在矩形叶片上开长方形孔能明显改善叶片后方的涡流,提高叶片的性能;当入口速度不变时,设备所受合力和转矩会随叶片数量的增加而增大;当叶片数量不变时,设备所受合力和转矩会随入口速度的增加而增大.研究结果可为新型竖直轴海洋能发电设备的结构设计与优化提供参考.

The Blade Optimization and Simulation of the New Vertical-axis Ocean Energy Power Generation Equipment

In order to analyze the new vertical-axis ocean energy power generation equipment, a simulation study was done on the flow field characteristics of its blade structure and the power collection characteristics of the equipment in the flow field. Through the establishment of two-dimensional models of blades with different structures and different numbers of blades, as well as through the simulation calculation, the flow field states of blades with different structures are obtained; the resultant force and the torque of the equipment when the number of the blades of the equipment is 3, 4 and 6 are also obtained. The research results show that: opening rectangular holes on the rectangular blade can significantly improve the vortex behind the blade and improve the performance of the blade; when the inlet speed is constant, the resultant force and torque of the equipment will increase with the increase of the number of blades; when the number of blades is constant, the resultant force and torque of the equipment will increase with the increase of the inlet speed. This provides a theoretical basis for the structural design and optimization of the new vertical-axis ocean energy power generation equipment.