Hotwire Measurement and Numerical Analysis of Flows around a Straight Wing Vertical Axis Wind Turbine
Hotwire Measurement and Numerical Analysis of Flows around a Straight Wing Vertical Axis Wind Turbine
复制标题
直翼垂直轴风力发电机周围流动的热线测量和数值分析
DOI：
10.1299/kikaib.77.637
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
S. Izawa
中科院分区：
文献类型：
--
作者：
Yuko Sato;H. Okazaki;Tatsuya Shoda;Y. Nishio;M. Shigeta;S. Izawa
本文对直翼垂直轴风力机的绕流进行了分析。进行了二维风洞热丝测量和数值模拟。旋翼有两个叶片，其翼型为NACA0012，弦长为旋翼直径的0.1。基于均速和转子直径的雷诺数为8.0 × 104。叶尖速比为2.0。采用不可压缩Navier-Stokes方程进行数值模拟。采用与转子转速相同的旋转坐标系。对实验结果和数值结果进行了比较。结果表明，各旋转角度下的速度场具有较好的一致性，气动转矩随流动条件尤其是流动分离的不同而变化。
This paper describes the analysis of flows around a straight wing vertical axis wind turbine. Hotwire measurements in two-dimensional wind tunnel and numerical simulations are conducted. The rotor has two blades, whose airfoil is NACA0012 and the chord length is 0.1 of the rotor diameter. Reynolds number based on the uniform velocity and rotor diameter is 8.0 × 104. The tip speed ratio is 2.0. Incompressible Navier-Stokes equation is used for numerical simulation. A rotating coordinate system, which rotates at the same speed of the rotor, is employed. Both the experimental and numerical results are compared. As a result, the velocity fields show good agreements at each rotation angle, and the aerodynamic torque varies according to the flow condition, especially the flow separation.