Experimental Measurement and CFD Model Development of Thick Wind Turbine Airfoils with Leading Edge Erosion

The Science of Making Torque from Wind

Maniaci, David C.^1 ; White, Edward B.^2 ; Wilcox, Benjamin^2 ; Langel, Christopher M.^3 ; Van Dam, C.P.^3 ; Paquette, Joshua A.^1

Sandia National Laboratories, Albuquerque

NM

87185, United States^1

Texas AandM University, College Station

TX

77843, United States^2

University of California, Davis

CA

95616, United States^3

关键词: Airfoil performance;    Annual energy productions;    Computational model;    Performance characteristics;    Research collaborations;    Turbine performance;    Utility-scale wind turbines;    Wind turbine airfoils;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/753/2/022013/pdf
DOI  :  10.1088/1742-6596/753/2/022013

来源: IOP

【 摘 要 】

Leading edge erosion and roughness accumulation is an issue observed with great variability by wind plant operators, but with little understanding of the effect on wind turbine performance. In wind tunnels, airfoil models are typically tested with standard grit roughness and trip tape to simulate the effects of roughness and erosion observed in field operation, but there is a lack of established relation between field measurements and wind tunnel test conditions. A research collaboration between lab, academic, and industry partners has sought to establish a method to estimate the effect of erosion in wind turbine blades that correlates to roughness and erosion measured in the field. Measurements of roughness and erosion were taken off of operational utility wind turbine blades using a profilometer. The field measurements were statistically reproduced in the wind tunnel on representative tip and midspan airfoils. Simultaneously, a computational model was developed and calibrated to capture the effect of roughness and erosion on airfoil transition and performance characteristics. The results indicate that the effects of field roughness fall between clean airfoil performance and the effects of transition tape. Severe leading edge erosion can cause detrimental performance effects beyond standard roughness. The results also indicate that a heavily eroded wind turbine blade can reduce annual energy production by over 5% for a utility scale wind turbine.