等离子体控制垂直轴风力机叶片失速特性研究  

Investigations of Plasma Actuator Control on Dynamic Stall of a Vertical Axis Wind Turbine

作　　者：马璐 王晓东[1] 祝健[1] 康顺[1] MA Lu;WANG Xiao-Dong;ZHU Jian;KANG Shun(Key Laboratory of CMCPPE Ministry of Education,North China Electric Power University,Beijing 102206,China)

机构地区：[1]华北电力大学电站设备状态监测与控制教育部重点实验室

出　　处：《工程热物理学报》2019年第9期2051-2057,共7页Journal of Engineering Thermophysics

基　　金：自然科学基金项目(No.51876063,No.51576065);中央高校青年基金项目(No.2018QN032)

摘　　要：动态失速是垂直轴风力机的重要特征。主动流动控制可以有效改善其动态失速特性。本文以二维H型垂直轴风力机模型为例,研究基于等离子体激励的主动流动控制对垂直轴风力机叶片动态失速的影响。通过风轮功率系数随尖速比变化的趋势验证了二维风力机模型的数值计算能很好捕捉H型垂直轴风力机典型的动态失速过程。在此基础上,将叶片上布置采用唯象模型的等离子体激励器,研究不同激励位置和激励频率对垂直轴风力机叶片动态失速的影响。结果表明等脉冲离子体激励能推迟叶片失速相位角,并提升叶片功率。最优激励位置和激励频率分别为0.3倍弦长和383 Hz,使叶片功率系数最大提升35.8%。Dynamic stall isa significant feature of vertical axis wind turbines.Active flow control can effectively improve its stall characteristics.In this paper,the effect of dielectric-barrierdischarge(DBD)plasma excitation characteristics on dynamic stall over a two-dimensional(2D)H-type vertical axis wind turbine(VAWT)model is investigated.The trend of power coefficients with a tip speed ratio of a 2D VAWT was used for verification,and 2 D numerical method could simulate the typical dynamic stall case of the H-type VAWT.Based on the verification,the plasma actuator with phenomenological model was placed on the blades,and the effects of altered excitation positions and frequencies on the dynamic stall was studied.The results showed that pulsed plasma excitation could delay the blade stall phase angle and increase the turbine power.The optimal excitation position was 0.3 times chord length and the optimal excitation frequency was 383 Hz,which increases the blade power coefficient by 35.8%.

关 键 词：等离子体 动态失速 垂直轴风力机 流动控制 数值模拟 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]