摘要
为提高垂直轴风力机的气动性能,提出在小型3叶片垂直轴风力机叶片尾缘加装开裂襟翼的设计方案。首先,根据CFD数值模拟和正交设计得到偏转角对风力机气动性能影响最大;然后,进一步分析了叶尖速比分别为1.5和2.5时襟翼偏转角对风力机气动性能的影响和增升机理;最后,提出了襟翼偏转角调节规律。研究结果表明:襟翼的较优参数组合为长度l=20%c、偏转角β=10°和布置位置t=90%c。当叶尖速比TSR分别为1.5和2.5时,较小的襟翼偏转角(0°<β<10°)能提升叶片平均切向力系数CTavg,其中,襟翼偏转角β=10°时,风力机的风能利用率CP分别提升了7.7%和4.6%;与原型风力机相比,应用襟翼偏转角调节规律后,风能利用率CP分别提升12.4%和10.4%。
In order to improve the aerodynamic performance of vertical-axis wind turbine(VAWT),a design scheme for adding a split flap on the trailing edge of the small 3-blade VAWT was proposed.Firstly,by using CFD numerical simulation and orthogonal design method,it was found that the deflection angle had the greatest influence on the aerodynamic performance of wind turbine.Secondly,the influences of the flap deflection angle on the aerodynamic performance of the wind turbine and the increasing mechanism of lift were analyzed when the tip speed ratio was 1.5 and 2.5 respectively.Finally,the regulation law of the flap deflection angle was proposed.The results show that the optimal length(l)is 20%c,optimal deflection angle(β)is 10°and optimal arrangement position(t)is 90%c.When tip speed ratio(TSR)is 1.5 and 2.5 respectively,the smaller fixed deflection angle(0°<β<10°)can increase the average tangential force coefficient of the blade.The output power coefficient(CP)increases by 7.7%and 4.6%respectively when deflection angle is 10°.By using the regulation law of flap deflection angle,the output power coefficient increases by 12.4%and 10.4%respectively compared with that of the prototype wind turbine.
作者
张立军
顾嘉伟
朱怀宝
胡阔亮
江奕佳
缪俊杰
王旱祥
刘静
ZHANG Lijun;GU Jiawei;ZHU Huaibao;HU Kuoliang;JIANG Yijia;MIAO Junjie;WANG Hanxiang;LIU Jing(College of Mechanical and Electronic Engineering,China University of Petroleum,Qingdao 266580,China)
出处
《中南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2020年第4期931-943,共13页
Journal of Central South University:Science and Technology
基金
国家自然科学基金资助项目(51707204)
中央高校基本科研业务专项资助项目(17CX05021)。
关键词
垂直轴风力机
开裂襟翼
正交设计
气动性能
调节规律
vertical-axis wind turbine(VAWT)
split flap
orthogonal design
aerodynamic performance
regulation law
