排灌机械工程学报2018，Vol.36Issue(3)：223-229,7.DOI:10.3969/j.issn.1674-8530.17.3005
阻力叶片对升阻复合型垂直轴风力机气动性能的影响
Influences of drag blade on aerodynamic performance of vertical-axis wind turbine with lift-drag compound rotor
摘要
Abstract
In order to obtain more energy from wind,the rotor size of vertical-axis wind turbines has been designed larger and larger.However,an enlarged rotor diameter can result in a difficulty for the rotor to start operation.A new type vertical-axis wind turbine with lift-drag compound rotor were proposed to solve this problem.Under the premise of keeping its lift blades unchanged,nine lift-drag compound rotors were established.The aerodynamics of the turbines with these rotors was numerically simulated by using Fluent.Influences of the drag blade radius and the distance L between the blade and the rotor shaft were studied based on the starting performance and operating efficiency.After the best combination of radius and position for the drag blade obtained,a comparison of performance was made with the lift type vertical-axis wind turbine.The results show that the starting performance of the wind turbine is better when the radius and the distance L get larger.In terms of operational efficiency,when the tip speed ratio is 0.5-1.0,the radius and the distance L exhibit a little effect on the power coefficient.When the tip speed ratio exceeds 1,however,increasing two factors can reduce the power coefficient.Although the operation efficiency of the wind turbine with lift-drag compound rotor is a bit low,its startup performance has been improved obviously.关键词
风力机/阻力叶片/升阻复合/气动性能/垂直轴Key words
wind turbine/resistance blade/lift resistance compound/aerodynamic performance/vertical axis分类
农业科技引用本文复制引用
曲建俊,王景元,赵越,张磊..阻力叶片对升阻复合型垂直轴风力机气动性能的影响[J].排灌机械工程学报,2018,36(3):223-229,7.基金项目
国家自然科学基金资助项目(51175104) （51175104）
国家973计划项目(2013 CB632305) （2013 CB632305）
