Study on the Performance of the Wind Turbine Airfoil with Icing

Abstract

If the performance of the blade was properly assessed, which would help improve wind turbine performance, wind turbine blade aerodynamics at low temperatures could severely affect the output power of the wind turbine. The research on the performance of wind turbine blade with icing which had the three different shapes was carried out. The blades flow field and the lift coefficient were got from the free stream wind whose speed was 10m/s at different angles of attack, The Influences on the flow Field and aerodynamic performance were discussed, when the ice shape changed. The results show that:1) Model 1 has the best performance, with the maximum lift coefficient of 1.2853, its stall angle of 14 degrees, and the stalling phenomenon of icing blade is postponed;2) the difference in the icing shapes has less affected on the flow field distribution and the lift coefficient at the small angle of attack, and the distribution of flow field is more sensitive to the ice shape on the upper part of the leading edge at the large angle of attack.3) Ice the irregular icing shape can cause the oscillation phenomenon for the lift coefficient at the angle of attack from 0 to 20 degree.