Influence of end plate on starting performance of Savonius wind turbines
In order to explore the effect of the end plate on the starting performance of Savonius wind turbines,the static starting performance of the end plate on a two-blade and a three-blade Savonius wind turbines operating at different wind speeds was compared and studied by using the method of nu-merical simulation and wind tunnel test,and the flow field was analyzed.The results show that for the two-blade Savonius wind turbine,the average starting torque of the wind turbine with end plate is 85.4%(u=8 m/s)higher than that of the wind turbine without end plates,and the reverse starting torque is small,but the starting torque fluctuation range of the wind turbines without end plates is smaller than that of the wind turbines with end plate.For the three-blade Savonius wind turbine,the average starting torque of the wind turbine with end plate is 17.9%(u=8 m/s)higher than that of the wind turbine without an end plate,but the wind turbines with end plates have a reverse torque,and the overall torque fluctuation range of the wind turbines without end plates is smaller than that of the wind turbines with end plates and there is no reverse starting torque.The existence of the end plate changes the flow conditions and pressure distribution at the blade end,and the influence law is diffe-rent with the number of blades.The obtained research results can provide a reference for the structural design of Savonius wind turbines.
万方数据
维普
