不同结构垂直轴风力机叶片流动非定常数值模拟  

UNSTEADY NUMERICAL SIMULATION ON ROTATED FLOW OF DIFFERENT VERTICAL AXIS WIND TURBINE SHAPE

作　　者：王云海[1] 钱凯[1] 韩景龙[1] 

机构地区：[1]南京航空航天大学振动工程研究所机械结构强度与振动国家重点实验室,南京210016

出　　处：《太阳能学报》2013年第10期1697-1701,共5页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(10872089)

摘　　要：采用CFD-FASTRAN软件求解Euler方程,结合其重叠网格和刚体运动功能对某阻力型垂直轴风力机旋转叶片进行非定常数值模拟。考虑风力机叶片开孔和不开孔两种情况进行建模,计算两种模型在不同转速下的输出功率。结果表明,在相同来流及转速条件下,风力机叶片适当开孔具有更高的输出功率。研究结果对阻力型垂直轴风力机叶片的设计具有一定的参考意义。In comparison with other types of wind turbine, the drag-type vertical axis wind turbine has more complex flow characteristics and greater relative motion, which makes the numerical simulation difficult. Based on overset grid method, unsteady numerical simulation of a straight-blade vertical axis wind turbine was done with the software CFD-FASTRAN for solving Euler equations. Two models with or without trepanning were set up to calculate the system＇ s output powers for different rotate speed conditions. The results show that the output power of blade with trepanning is higher than blade with proper trepanning. The conclusion has some reference significance for designing drag-type vertical axis wind turbine.

关 键 词：垂直轴风力机 重叠网格 计算流体力学 有限体积法 非定常流动 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]