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http://dx.doi.org/10.5407/jksv.2019.17.2.032

Comparison Study on Aerodynamic Performance and Wake Flow Field for a MW-Class Wind Turbine Model  

Jeong, Duwon (DeltaES Co., Ltd.)
Won, Young Soo (DeltaES Co., Ltd.)
Kang, Seung-Hee (Department of Aerospace Engineering, Chonbuk National University)
Publication Information
Journal of the Korean Society of Visualization / v.17, no.2, 2019 , pp. 32-38 More about this Journal
Abstract
A comparison study between computational-fluid-dynamics simulation and wind tunnel test for a megawatt-class wind turbine is conducted. For the study, flow-field in wake, basic aerodynamic performance, and effect of the yaw error for a 1/86 scaled-down model of the NREL offshore 5 MW wind turbine are numerically calculated using commercial software "FloEFD" with $k-{\varepsilon}$ turbulence model. The computed results are compared to the wind tunnel test performed by the constant-velocity mode for the model. It is shown that discrepancy are found between the two results at lower tip-speed ratio and higher yaw angle, however, the velocity-defection distribution in the wake, the torque coefficient at moderated and high tip-speed ratios are in good agreement with the wind tunnel test.
Keywords
NREL 5 MW wind turbine; FloEFD; Aerodynamic analysis; Wake Flow Field; Yaw error;
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