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Proceedings Paper

Development of flow separation control system to reduce the vibration of wind turbine blades
Author(s): Ho-Young Kim; Ho-Hyun Kim; Jong-Seob Han; Jae-Hung Han
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Paper Abstract

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.

Paper Details

Date Published: 11 April 2017
PDF: 6 pages
Proc. SPIE 10164, Active and Passive Smart Structures and Integrated Systems 2017, 101642V (11 April 2017); doi: 10.1117/12.2259874
Show Author Affiliations
Ho-Young Kim, KAIST (Korea, Republic of)
Ho-Hyun Kim, KAIST (Korea, Republic of)
Jong-Seob Han, KAIST (Korea, Republic of)
Jae-Hung Han, KAIST (Korea, Republic of)


Published in SPIE Proceedings Vol. 10164:
Active and Passive Smart Structures and Integrated Systems 2017
Gyuhae Park, Editor(s)

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