摘要
针对风力机叶片失速会降低风力机输出功率的问题,文章首先基于Fluent软件建立了NREL Phase Ⅵ风力机气动特性分析模型,计算风速为13 m/s时风力机叶片截面压力系数及功率特性,并与风洞实验数据进行对比,验证风力机气动特性分析模型的准确性;然后,将主动射流和涡流发生器(VGs)耦合到风力机叶片上,发现随射流孔宽度和涡流发生器高度的增加,风力机功率均呈先增后减趋势;最后,建立混合流动控制的风力机气动分析模型,研究射流与VGs弦向间距及后缘VGs高度对风力机气动特性的影响。研究表明:当间距为0.3C(C为翼型弦长)时,风力机输出功率达到最高,相比于射流单一控制,增幅为6.61%;当后缘VGs高度为15 mm时,混合式流动控制的效果最佳,风机功率最高。
Wind turbine blade stall wll reduce wind turbine output power.In this paper,the aerodynamic analysis model of NREL Phase VI wind turbine was established based on Fluent software,and the pressure coefficient and power characteristics of the wind turbine blade section were calculated at13 m/s wind speed,and theaccuracy of the acrodynamic analysis method of the wind turbine was verified by comparing with the wind tunnel experimental data.Then,the active jet and vortex generator(VGs)were coupled to the blade of the wind turbine.It was found that the power of the wind turbine increased first and then decreased with the increase of the width of the jet hole and the height of the vortex generator.A wind turbine aerodynamic analysis model with mixed flow control was established to study the influence of the chord distance between jet and vortex generator and the height of VGs at the trailing edge on the aerodynamic characteristics of the wind turbine.The results show that the wind turbine output power reaches the highest when the distance is 0.3C(C is the chord length of airfoil),and the increase is 6.61%compared with the single jet control.When the trailing edge VGs height is 15 mm,the hybrid flow control has the best effect and the highest fan power.
作者
高金娥
韩水
谭剑锋
史瑞鹏
夏云松
Gao Jine;Han Shui;Tan Jianfeng;Shi Ruipeng;Xia Yunsong(School of Mechanical and Power Engineering,Nanjing Tech University,Nanjing 211816,China)
出处
《可再生能源》
CAS
CSCD
北大核心
2024年第2期198-205,共8页
Renewable Energy Resources
基金
江苏省自然科学基金面上项目(BK20161537)
国家自然科学基金(11502105)。
作者简介
通信作者:谭剑锋(1984-),男,博士,副教授,研究方向为风力机气动特性、流动控制。E-mail:Jianfengtan@njtech.edu.cn。
