不同吸气策略对风力机翼型动态失速特性的影响

Influence of Different Suction Strategies on Dynamic Stall Characteristics of Wind Turbine Airfoil

以NACA0012翼型为研究对象,采用Transition SST湍流模型和Simple算法模拟了高雷诺数下吸气控制对翼型失速特性的影响。设计了4种吸气策略,详细探讨了不同吸气策略对翼型动态失速的影响,并对比其所需能耗。结果表明:在相同动量系数下吸气控制对动态失速涡的抑制明显优于喷气控制;与喷气控制相比,采用吸气控制后翼型的平均升力系数可提高13%以上,平均阻力系数可降低80%;当采用开口向下的Sin函数策略时,翼型的等效升阻比最大。

Taking NACA0012 airfoil as an object of research,the influence of leading edge suction on stall characteristics of airfoil at high Reynolds number was simulated using Transition SST turbulence model and Simple algorithm,and four different suction strategies were designed,so as to analyze the effects of different suction strategies on airfoil dynamic stall,and compare the energy consumption required of the four.Results show that at the same momentum coefficient,suppression of dynamic stall vortices by suction control is better than that of jet control.Compared with jet control,average lift coefficient of the airfoil can be increased by more than 13%,while the average drag coefficient can be reduced by 80%.The equivalent lift to drag ratio of the airfoil reaches maximum when the strategy of Sin function with the opening downward is adopted.