基于扰流技术的直叶片升力型垂直轴风轮的性能改善 |
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引用本文: | 赵振宙,陈潘浩,王同光,田晨,刘玄,郑源.基于扰流技术的直叶片升力型垂直轴风轮的性能改善[J].机械工程学报,2016(22):146-152. |
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作者姓名: | 赵振宙 陈潘浩 王同光 田晨 刘玄 郑源 |
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作者单位: | 1. 河海大学能源与电气学院 南京 211100;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;2. 河海大学能源与电气学院 南京 211100;3. 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 |
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基金项目: | 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) |
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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345oθ≤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,345oθ≤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。
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关 键 词: | Darrieus-H型风轮 扰流 双盘面多流管模型 性能改善 |
Performance Improvement of Lift Type Wind Turbine with Straight Blades Based on Interference Airflow Technology |
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Abstract: | 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 0°≤θ≤15°and 345°<θ≤360°,but the growth decreases in the scope of azimuth angle between 175° and 185°.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 0° azimuth angle is higher than that is in 180° azimuth angle,in azimuth angle between 0° and 15°,the growth of the blade element torque is higher than that in scopes of 345°<θ≤360°,and that is the lowest in the azimuth angle scope 175°≤θ≤185°.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 0° and 180° 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. |
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Keywords: | Darrieus-H type wind turbine interference airflow double-multiple stream tube model power improvement |
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