风透镜是一种应用于垂直轴风力机的新型外部辅助装置,为探究风透镜结构对垂直轴风力机气动性能的影响,通过数值模拟的方法,结合贝塞尔曲线对其构型进行优化设计。结果表明：风透镜具有较好的聚风性能,有助于垂直轴风力机气动性能的提升,风透镜结构参数中扩散器半开角对风力机气动性能影响较大,法兰次之。风透镜优化构型后可进一步提升垂直轴风力机的风能利用系数和力矩系数,风能利用系数最高可达参考垂直轴风力机的8.60倍,并使垂直轴风力机在更大叶尖速比工况下仍保持较高运行效率,进一步提升其有效运行工况范围。
Abstract
The wind lens is a new external auxiliary device applied to the vertical axis wind turbine. In order to explore the influence of the wind lens structure on the aerodynamic performance of the vertical axis wind turbine, its configuration was optimized by numerical simulation and Bezier curve. The results show that the wind lens has good wind collecting performance, which is helpful to improve the aerodynamic performance of the vertical axis wind turbine. Among the structural parameters of the wind lens, the half-open Angle of the diffuser has a great influence on the aerodynamic performance of the wind turbine, followed by the flange. The optimized configuration of wind lens can further improve the wind energy utilization coefficient and torque coefficient of the vertical axis wind turbine, and the wind energy utilization coefficient can be up to 8.60 times of the reference vertical axis wind turbine. The vertical axis wind turbine can still maintain high operating efficiency under the condition of a larger sharp-speed ratio, and further improve its effective operating range.
关键词
风力机 /
数值模拟 /
气动性能 /
垂直轴 /
风透镜 /
贝塞尔曲线
Key words
wind turbines /
numerical simulation /
aerodynamic performance /
vertical axis /
wind lens /
Bezier curve
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基金
国家自然科学基金（51976131; 51676131）; 上海“科技创新行动计划”地方院校能力建设项目（19060502200）
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