翼型
涡轮机
执行机构
涡轮叶片
等离子体驱动器
振动
升力系数
风速
Lift(数据挖掘)
风力发电
流量控制(数据)
流动分离
海洋工程
声学
机械
航空航天工程
物理
计算机科学
工程类
等离子体
湍流
雷诺数
气象学
电气工程
数据挖掘
计算机网络
量子力学
介质阻挡放电
作者
Ho-Young Kim,Hohyun Kim,Jong-Seob Han,Jae‐Hung Han
摘要
The size of wind turbine blade has been continuously increased. Large-scale wind turbine blades induce loud noise, vibration; and maintenance difficulty is also increased. It causes the eventual increases of the cost of energy. The vibration of wind turbine blade is caused by several reasons such as a blade rotation, tower shadow, wind shear, and flow separation of a wind turbine blade. This wind speed variation changes in local angle of attack of the blades and create the vibration. The variation of local angle of attack influences the lift coefficient and causes the large change of the lift. In this study, we focus on the lift coefficient control using a flow control device to reduce the vibration. DU35-A15 airfoil was employed as baseline model. A plasma actuator was installed to generate the upwind jet in order to control the lift coefficient. Wind tunnel experiment was performed to demonstrate of the performance of the plasma actuator. The results show the plasma actuator can induce the flow separation compared with the baseline model. In addition, the actuator can delay the flow separation depending on the input AC frequency with the same actuator configuration.
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