摘要
为研究翼型动态失速过程中,涡流发生器(VGs)对其气动特性和流场的影响,本文采用延迟分离涡模型对加装VGs的风力机翼型DU91-W2-250翼段动态失速进行了数值模拟,分析了VGs对深失速和轻失速转化过程的影响。结果表明:涡流发生器对动态失速有抑制作用,有显著的增升减阻效果,翼段下俯段的气动性能改善效果要好于上仰段。由于分离程度不同,翼段加涡流发生器后,深失速下俯段升力低于上仰段,轻失速下结果则相反。
To study the effect of vortex generators(VGs)on the aerodynamic characteristics and flow field of the airfoil during a dynamic stall,the wind turbine airfoil DU91-W2-250 with VGs is simulated using the delayed detached-eddy simulation approach.The numerical simulation is used to analyze the effect of VGs on the conversion process of deep and light stalls.The results show that VGs can inhibit dynamic stall by significantly increasing lift and decreasing drag,which is more obvious in the pitch-down stage of the airfoil segment.When affected by VGs,the lift in the pitch-down stage of the airfoil segment is lower than that of the pitch-up stage during a deep stall,whereas the opposite tendency occurs during a light stall.
作者
赵振宙
孟令玉
王同光
苏德程
吴昊
许波峰
ZHAO Zhenzhou;MENG Lingyu;WANG Tongguang;SU Decheng;WU Hao;XU Bofeng(College of Energy and Electric Engineering, Hohai University, Nanjing 211100, China;Key Laboratory of Wind Energy and Solar Energy Technology, Inner Mongolia University of Technology, Hohhot 010000;Jiangsu Key Laboratory of Hi-Tech Research For Wind Turbine Design, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China)
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2021年第2期233-239,共7页
Journal of Harbin Engineering University
基金
风能太阳能利用技术教育部重点实验室开放基金项目(20182D05)
国家自然科学基金项目(51876054,11502070)
中央高校基本科研业务费专项资金项目(2019B48614).
关键词
动态失速
轻失速
深失速
涡流发生器
DDES方法
DU91-W2-250
气动特性
数值模拟
dynamic stall
light stall
deep stall
vortex generator
delayed detached-eddy simulation method
DU91-W2-250
aerodynamic characteristics
numerical simulation
作者简介
通讯作者:赵振宙,男,教授,博士生导师,E-mail:joephy@163.com.
