摘要
为提高流管模型在立轴风力机空气动力学性能预报中的准确性,根据不同速比范围内立轴风力机空气动力学特性,研究分析了双盘面多流管模型的有效性和局限性,并引入动态失速模型和附加阻力系数对流管模型进行修正。算例结果表明:修正后的流管模型可以较准确地预报低速比区域内的动态失速效应和高速比区域内的第二效应,理论计算结果与实验值符合较好,能准确反映立轴风力机空气动力学性能变化规律,适用于立轴风力机气动性能设计分析。
In order to improve the accuracy of stream-tube model on aerodynamic performance prediction of vertical axis wind turbine, the validity and limitation of double disks multiple stream-tube model were analyzed according to the vertical axis wind turbine＇ s aerodynamic performance characteristics in different ranges of the tip-speed ratio. As shown in the comparison of the calculation results and the field test data of vertical axis wind turbine, the modified model could be able to predict the dynamic stall effect in the low tip-speed ratio region and the secondary effect in the high tip-speed ratio region accurately and reflect the rule of the vertical axis wind turbine＇ s aerodynamic performance. So the modified streamtube model could be fit for the aerodynamic performance design and analysis in vertical axis wind turbine.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2009年第9期1292-1296,共5页
Acta Energiae Solaris Sinica
基金
国家发改委国家技术装备研制和产业技术开发专项(ZB07-01-01-03)
关键词
立轴风力机
气动性能
流管模型
动态失速
附加阻力系数
VAWT
aerodynamic performance
stream-tube model
dynamic stall
added drag coefficient
