带导流板的一体化风机气动性能分析

Aerodynamic Performance Analysis of Integrated Wind Turbine With A Baffles

为了探究风轮结构参数对带导流板的一体化风机的气动性能影响规律,采用3D瞬态RNG k-ε湍流模型和滑移网格模拟风轮不同工况下,重叠比、叶片弯度以及导流板长度和安装角度对转矩系数和风能利用率的影响,分析了风轮内部流场变化,选取了最优参数进行综合仿真分析并进行了实验验证。结果表明:在重叠比为0.1,弯度为0.35时风机风能利用率达19%,比sandia实验室的风机提高3.5%;导流板有助于改善风轮内部流场,提高风机风能利用率。

In order to investigate the influence of wind wheel structural parameters on .the aerodynamic performance of integrated turbine with a baffles,the influence of overlap ratio,blade camber,length of guide plate and installation angle on torque coefficient and wind energy utilization ratio under different working conditions of simulated wind turbine are simulated by 3D transient RNG k-epsilon turbulence model and slip grid.The optimal parameters are selected for comprehensive simulation analysis and experimental verification.The results show that the wind energy utilization rate of the turbine is 19% when the overlap ratio is 0.1 and the bend is 0.35,which is 3.5%higher than that in the Sandia laboratory.The guide plate is helpful to improve the internal flow field of the wind turbine and improve the wind energy utilization rate of the turbine.