Numerical study on the influence of surface roughness on the aerodynamic performance of airfoils
LI Weiqiang
Abstract：To explore the influence of surface roughness on the performance of wind turbine blades,a rectangular protrusion is used instead of the actual rough band to numerically simulate the aerodynamic performance of two airfoil types,DU93-W-210 and DU97-W-300,to determine the roughness sensitive position of this airfoil.On this basis,the protrusion size is changed.Analyze the specific degree of damage caused by the size of the rough zone to the aerodynamic performance of the wind turbine airfoil.The results show that surface contamination can seriously damage the aerodynamic performance of wind turbine blades.Moreover,as the relative thickness increases,the influence of roughness on the aerodynamic performance of the airfoil becomes more severe.However,the relative thickness does not change the roughness sensitive position of the airfoil.The roughness sensitive position of the DU series airfoil is at 1%c from the leading edge.The size of the boss also affects the aerodynamic performance of the airfoil,and the change in boss height has a greater impact on the performance of the airfoil than the boss width.By analyzing the influence of roughness on the airfoil of wind turbine blades,the operating status of the blades can be accurately identified,and the operating conditions of the blades can be inferred,providing a reference for the safe and stable operation of wind turbines.
Keywords：wind turbineroughnessrelative thicknessaerodynamic performanceaerodynamic noise
Publication Date：2025-12-25
Online Publishing Date：2026-01-26(First online date of this platform, not the publication date of the document)
Pages：4( 63-66 )