In order to investigate the influence of ice coating roughness on the stall characteristics of wind turbine blade airfoil,surface roughness was selected as the sensitive parameter,and based on FEN-SAP-ICE software,combined with the ice coating roughness model,numerically simulates the ic-ing process of frost ice and clear ice.The effect of ice coating roughness on the stall performance of two ice-shaped airfoils was analyzed in Fluent.The results show that due to the regular geometric shape of frost ice,it has little influence on the stall performance of the airfoil.The stall performance of the airfoil is greatly affected by the change of ice coating roughness.On the other hand,the stall perfor-mance of the open ice icing airfoil is mainly affected by the icing shape and the change of ice coating roughness has little influence.Compared with the overall ice coating roughness,the leading edge ice coating roughness has a greater impact on the stall performance of the iced airfoil.Whether it is a frost-ice airfoil or a clear-ice airfoil,the higher the surface roughness height,the greater the impact on the stall performance of the airfoil.
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