摘要
针对双叶片直线翼垂直轴风力发电机的流场复杂多变的问题,采用k-ω(SST)湍流模型进行数值模拟,展开了对垂直轴风力发电机流场特性的分析,建立了风速与位置的关系,得到了风速最低位置以及风速恢复区域。研究结果表明,三维CFD仿真所得数据与风洞试验数据虽然有所偏差但对于研究垂直轴风力发电机的流场特性影响较小;通过对垂直于z轴截面和垂直于x轴截面的风速云图分析得出:低风速区域不关于x轴对称,其偏向于y轴负半轴;利用风速值曲线定量得出随着x/R的增大,低风速区的面积逐渐扩散,其值先减小后增大。这为建立垂直轴风力发电厂建立基础。
Aiming at the complex and changeable flow field of double-vane straight wing vertical axis wind turbine,the k-ω(SST)turbulence model was used for numerical simulation.The analysis of the flow field characteristics of the vertical axis wind turbine was conducted.The lowest wind speed position and wind speed recovery area were obtained by establishing the relationship of the position and wind speed.The results indicate that although the data obtained from the 3 D CFD simulation and the wind tunnel test have some deviations,they have little effect on the study of the flow field characteristics of the vertical axis wind turbine.The analysis of the wind speed cloud map shows that the low wind speed area is not symmetrical about the x-axis,and it is biased toward the negative semi-axis of the y-axis.With the increase of X/R,the area of low wind speed area gradually diffuses,and its value first decreases and then increases..This establishes the foundation for vertical axis wind power plants.
作者
朱新宇
郭志平
杨燕昭
李庆安
ZHU Xin-yu;GUO Zhi-ping;YANG Yan-zhao;LI Qing-an(College of Mechanical Engineering,Inner Mongolia University of Technology,Hohhot Inner Mongolia 010051,China;School of Energy Science and Engineering,Harbin University of Technology,Harbin Heilongjiang 150001,China;Institute of Engineering Thermophysics,Chinese Academy of Sciences,Beijing 100190,China)
出处
《计算机仿真》
北大核心
2021年第8期108-112,122,共6页
Computer Simulation
基金
国家自然科学基金(5176050157)。
关键词
垂直轴风力发电机
数值仿真
风速云图
Vertical axis wind turbines
Numerical simulation
Wind velocity contour
