Survey of techniques for reduction of wind turbine blade trailing edge noise.

Barone, Matthew Franklin

关键词: AERODYNAMICS;    AIRFOILS;    BOUNDARY LAYERS;    DESIGN;    PERFORMANCE;    ROTORS;    TURBINES;    WIND TURBINES;   

DOI  :  10.2172/1029824
RP-ID  :  SAND2011-5252
PID  :  OSTI ID: 1029824
Others  :  TRN: US201201%%233

学科分类：再生能源与代替技术

美国|英语

来源: SciTech Connect

【 摘 要 】

Aerodynamic noise from wind turbine rotors leads to constraints in both rotor design and turbine siting. The primary source of aerodynamic noise on wind turbine rotors is the interaction of turbulent boundary layers on the blades with the blade trailing edges. This report surveys concepts that have been proposed for trailing edge noise reduction, with emphasis on concepts that have been tested at either sub-scale or full-scale. These concepts include trailing edge serrations, low-noise airfoil designs, trailing edge brushes, and porous trailing edges. The demonstrated noise reductions of these concepts are cited, along with their impacts on aerodynamic performance. An assessment is made of future research opportunities in trailing edge noise reduction for wind turbine rotors.