합성제트를 이용한 풍력터빈 에어포일의 유동 제어에 관한 수치적 연구 Numerical Study about Flow Control of a Wind Turbine Airfoil using Synthetic Jets

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In the present study, a numerical study about flow control of a wind turbine airfoil was performed using computational fluid dynamics (CFD). Two dimensional unsteady Reynolds-Averaged Navier-Stokes (RANS) solver was used to solve the flow around a wind turbine airfoil. Synthetic jets were applied to the DU 35 airfoil used in the inboard section of the NREL 5MW wind turbine. In order to simulate the synthetic jets, suction/blowing boundary condition was applied. The flow characteristics of synthetic jets were investigated according to the injection speed and injection angle. The injection velocity is 1, 2, and 3 times the freestream and the injection angle is 45 degrees. As the injection speed increases, more energy is transferred into the boundary layer. Therefore, the performance of the DU 35 airfoil is most improved when the injection speed is 3 times the freestream. In the case of the injection angle, the flow analysis was performed at 0 degrees, 45 degrees, and the direction perpendicular to the surface. The injection speed at this time is 3 times. The size and shape of the vortices generated by the synthetic jets depend on the injection angle. When the injection angle is 45 degrees, the performance enhancement of the DU 35 airfoil is the greatest.
Publisher
한국전산유체공학회
Issue Date
2017
Language
Korean
Keywords

전산유체역학(Computational Fluid Dynamics); 풍력터빈 에어포일(Wind Turbine Airfoil); 합성제트(Synthetic Jet); 분사속도(Injection Speed); 분사각도(Injection Angle)

Citation

한국전산유체공학회지, v.22, no.3, pp.1 - 8

ISSN
1598-6071
DOI
10.6112/kscfe.2017.22.3.001
URI
http://hdl.handle.net/10203/241151
Appears in Collection
AE-Journal Papers(저널논문)
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