摘要
采用雷诺平均N-S方程和滑移网格建立双风轮风力机气动特性分析模型,将风力机叶片压力分布和功率特性计算值与实验值进行对比,并分析双风轮间距和相位角对风力机功率特性的影响规律。结果表明:前风轮的输出功率基本不受风轮间距的影响,后风轮的输出功率随风轮间距的增大而减小,且降幅逐渐增大;随着风轮相位角的增大,前风轮的输出功率先减小后增大,后风轮的输出功率先增大后减小;当风轮相位角为30°和75°时,双风轮风力机总输出功率分别达到最大值和最小值。
An analysis model was developed for the aerodynamic characteristics of a double-rotor wind turbine using N-S equations and sliding meshes, based on which, a comparison was carried out between the calculated results and experimental data for the blade surface pressure distribution and power characteristics, so as to analyze the effects of blade spacing and phase angle on the power characteristics of the wind turbine. Results show that the power output of front blade is slightly affected by the blade spacing, while that of back blade decreases with the rise of blade spacing, at a gradually improved decreasing degree. With the increase of phase angle, the power output of front blade decreases first and then increases, while that of back blade increases first and then decreases. When the phase angle comes to 30° and 75°, the total power output of the double-rotor wind turbine would reach the maximum and minimum values, respectively.
作者
孙义鸣
谭剑锋
周天熠
SUN Yiming;TAN Jianfeng;ZHOU Tianyi(School of Mechanical and Power Engineering,Nanjing Tech University,Nanjing 211816,China)
出处
《动力工程学报》
CAS
CSCD
北大核心
2019年第10期853-859,864,共8页
Journal of Chinese Society of Power Engineering
