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http://dx.doi.org/10.3795/KSME-B.2016.40.1.021

Validation of the Eddy Viscosity and Lange Wake Models using Measured Wake Flow Characteristics Behind a Large Wind Turbine Rotor  

Jeon, Sang Hyeon (Faculty of Wind Energy Engineering Graduate School, Jeju Nat'l Univ.)
Go, Young Jun (Hanjin IND. CO., LTD.)
Kim, Bum Suk (Faculty of Wind Energy Engineering Graduate School, Jeju Nat'l Univ.)
Huh, Jong Chul (Faculty of Mechanical Engineering, Jeju Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.40, no.1, 2016 , pp. 21-29 More about this Journal
Abstract
The wake effects behind wind turbines were investigated by using data from a Met Mast tower and the SCADA (Supervisory Control and Data Acquisition) system for a wind turbine. The results of the wake investigations and predicted values for the velocity deficit based on the eddy viscosity model were compared with the turbulence intensity from the Lange model. As a result, the velocity deficit and turbulence intensity of the wake increased as the free stream wind speed decreased. In addition, the magnitude of the velocity deficit for the center of the wake using the eddy viscosity model was overestimated while the turbulence intensity from the Lange model showed similarities with measured values.
Keywords
Wind Turbine; Single Wake; Velocity Deficit; Turbulence Intensity;
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