Numerical Simulation of the Effect of Surface Roughness on Wind Turbine Thick Airfoils
The full two-dimensional Navier–Stokes algorithm and the k-ω SST turbulence model were used to investigate incompressible viscous flow past the wind turbine two-dimensional airfoils under clean and roughness surface conditions. The NACA 63-430 airfoil and FFA-W3-301arifioil, which are widely used in wind turbine airfoil and generally located at mid-span of the blade with about 30％ thickness, were chosen to be subjects. The numerical simulation of the two airfoils under clean surface condition was done separately, and the numerical results had a good consistency with the experimental data. The wind turbine blade surface dust accumulation according to the operation periods in natural environment was taken into consideration. Then, the lift coefficients and the drag coefficients of NACA 63-430 airfoil and FFA-W3-301arifiol were computed under different roughness heights. The role that roughness plays in promoting premature transition to turbulence and flow separation has been verified by the numerical results. The trend of the lift coefficients and the drag coefficients of the two airfoils with the roughness increasing was obtained, and the critical value of roughness height was proposed. Furthermore, the effect of the different roughness locations on the performance of NACA 63-430 airfoil was studied, and the critical value of roughness location was proposed.
wind turbine airfoils lift coefficient drag coefficient roughness height roughness location
Nianxin Ren Jinping Ou
School of Civil Engineering,Harbin Institute of Technology,Harbin 150090,China School of Civil Engineering,Harbin Institute of Technology,Harbin 150090,China;School of Civil and H
国际会议
第六届国际振动工程会议(The 6th International Conference on Vibration Engineering)(ICVE’ 2008)
大连
英文
2008-06-04（万方平台首次上网日期，不代表论文的发表时间）