基于扰流技术的直叶片升力型垂直轴风轮的性能改善  

Performance Improvement of Lift Type Wind Turbine with Straight Blades Based on Interference Airflow Technology

作　　者：赵振宙[1,2] 陈潘浩 王同光[2] 田晨[1] 刘玄[1] 郑源[1] 

机构地区：[1]河海大学能源与电气学院,南京211100 [2]南京航空航天大学江苏省风力机设计高技术研究重点实验室,南京210016

出　　处：《机械工程学报》2016年第22期146-152,共7页Journal of Mechanical Engineering

基　　金：国家自然科学基金(11502070);江苏省基础研究计划(自然科学基金;SBK201340780);国家重点基础研究发展计划(973计划;2014CB046200);江苏省六大人才高峰(XNY-007)资助项目

摘　　要：提出采用扰流方法,来解决因局部方位角的叶片攻角极小而导致整体H型风轮性能较低的问题。基于双盘面多流管模型,分析了尖速比分别为5和6时,扰流对叶片攻角、切向力系数和转矩的影响规律。计算表明:扰流作用下,在0o≤θ≤15o和345o<θ≤360o引流范围内,攻角增幅随着方位角的增加而增加;在175o≤θ≤185o范围内,随方位角的增加而减小;相同引流域内,随着尖速比的增大而减小。扰流对0o方位角性能改善效果比180o方位角明显,切向力系数和转矩的增幅在0o≤θ≤15o扰流范围内较大,345o<θ≤360o次之,175o≤θ≤185o范围内增幅最小。研究了扰流角对风轮性能的影响规律,研究表明适当增大0o和180o处的扰流角可以提高风轮性能,扰流角增加相同幅度,上盘面的转矩的提高幅度更大。The method of interference airflow is put forward to solve the problem of H-type wind turbine,lower performance,caused by the small angle of attack.The double-multiple stream-tube model is used for analyzing the influence of the interference airflow to the angle of attack in the speed radios of 5 and 6 respectively.Calculation shows that： Disturbance airflow increases the blade angle of attack,and the growth increases with the increase of the azimuth angle within the two scopes of the interference that is 0o≤θ≤15o and 345oθ≤360o,but the growth decreases in the scope of azimuth angle between 175o and 185o.In the same scope of interference,as tip speed ratio higher,the growth of blade element angle of attack lower instead; The range of interference to the improved performance in 0o azimuth angle is higher than that is in 180o azimuth angle,in azimuth angle between 0o and 15o,the growth of the blade element torque is higher than that in scopes of 345oθ≤360o,and that is the lowest in the azimuth angle scope 175o≤θ≤185o.At the same time,the effect rules of interference angle impact on wind turbine performance is analyzed,studies have shown that,increasing the interference angle in 0o and 180o appropriately can improve wind turbine performance and the torque growth of the up-disk is higher than down-disk when the interference angle growth is equal.

关 键 词：Darrieus-H型风轮 扰流 双盘面多流管模型 性能改善 

分 类 号：TV142.3[水利工程—水力学及河流动力学]