全向导叶对垂直轴风力机流场的影响  

Influence of ODGV on the Flow Field of Vertical Axis Wind Turbine

作　　者：黄惠兰[1] 汤维 李刚[2] 刘卉 HUANG Hui-lan;TANG Wei;LI Gang;LIU Hui(College of Mechanical Engineering,Guangxi University,Guangxi Nanning 530004,China;College of Electrical Engineering,Guangxi University,Guangxi Nanning 530004,China)

机构地区：[1]广西大学机械工程学院,广西南宁530004 [2]广西大学电气工程学院,广西南宁530004

出　　处：《机械设计与制造》2022年第8期278-281,共4页Machinery Design & Manufacture

基　　金：国家自然科学基金资助项目(51466001);广西自然科学基金(2017GXNSFAA198344,2017GXNSFDA198042)。

摘　　要：为提高垂直轴风力机的运行特性,并为垂直轴风力机流场设计提供方法,对带有弯曲型全向导叶(导叶1)和直板型全向导叶(导叶2)的NACA0021翼型三叶片垂直轴风力机进行数值模拟,采用滑移网格技术,通过与文献实验值对比,确定合适叶轮的旋转区域计算模型。计算结果表明:全向导叶可增大风力机的平均力矩,最大风能利用率为0.453,提高风力机的气动性能;另外,全向导叶影响风力机旋转区域的流场,促使力矩有较大波动;导叶1的速度尾流场范围较大,导叶2的速度尾流恢复速度较快。In order to improve the operation characteristics of vertical axis wind turbine and provide a method for the flow field design of vertical axis wind turbine,the numerical simulation of a three blade vertical axis wind turbine with a curved omnidirectional guide vane(guide vane 1)or a straight plate omnidirectional guide vane(guide vane 2)is carried out for NACA0021 airfoil.The sliding mesh method is used to determine the rotation region calculation model of suitable impeller by comparing with the experimental values in literature.The results show that the guide vane increase the average moment of the wind turbine,and the maximum wind energy utilization rate is 0.453,which improve the aerodynamic performance of the wind turbine.In addition,the Omni-directional guide vane affects the flow field in the rotating region of the wind turbine,which makes the moment fluctuate greatly.The range of velocity wake field of guide vane 1 is large,and the velocity wake recovery speed of guide vane 2 is faster.

关 键 词：垂直轴风力机 全向导叶 功率系数 力矩 流场 尾流 

分 类 号：TH16[机械工程—机械制造及自动化] TK83[动力工程及工程热物理—流体机械及工程]