摘要
在不考虑连杆、转轴及叶尖损失的简化模型基础上,利用Fluent软件采用雷诺平均Navier-Stokes方程与k-ωSST湍流模型对直叶片垂直轴风力机进行了数值模拟.对比了相同叶尖速比λ=4,叶轮半径r分别为1 m和2 m的垂直轴风力机的气动性能.结果表明,在来流风速V∞和叶尖速比λ相同的情况下,不同半径的垂直轴风力机具有十分相似的翼型表面压力分布,对应位置处的升、阻力系数相差不大.
On the basis of simplified model without concerning the linkage,spindle and tip loss,a straight-blade vertical axis wind turbine （VAWT）was simulated using Fluent software with Navier-Stokes equations and k-ω SST turbulence model.Under the same conditions of tip speed ratio λ=4 and the wind velocity V ∞ =10 m＆#183;s-1 ,aerodynamic performance of two VAWTs with different impeller radius r = 1 m and r = 2 m is compared.The results show that the surface pressure distributions of VAWTs are very similar on these conditions,as well as the lift coefficient and resistance coefficient in corresponding azimuth angle.
出处
《能源研究与信息》
2014年第3期150-156,共7页
Energy Research and Information
关键词
直叶片垂直轴风力机
叶尖速比
数值模拟
涡量图
俯仰频率
straight-blade vertical axis wind turbine
tip speed ratio
numerical simulation
vortical contour
pitching frequency
