柔性襟翼对风力机翼型气动性能的影响  

Influence of Deformable Trailing Edge Flap on Aerodynamic Performance of the Wind Turbine Airfoil

作　　者：郝文星[1] 叶舟[1,2] 丁勤卫 李春[1,2] 

机构地区：[1]上海理工大学能源与动力工程学院,上海200093 [2]上海市动力工程多相流动与传热重点实验室,上海200093

出　　处：《动力工程学报》2016年第6期473-479,共7页Journal of Chinese Society of Power Engineering

基　　金：国家自然科学基金资助项目(E51176129);上海市教育委员会科研创新基金资助项目(13YZ066);上海市研究生创新基金资助项目(JWCXSL1402)

摘　　要：通过对柔性尾缘襟翼(DTEF)参数化建模,实现了对尾缘襟翼柔性变形与控制.采用数值模拟方法研究DTEF对翼型整体静态与动态气动性能的影响及流动机理.结果表明:DTEF位于不同摆角时,翼型升力系数与阻力系数均有不同程度的明显改变,随着攻角的增大,襟翼改变翼型气动性能的能力降低,对襟翼附近的流动影响亦减弱;DTEF动态运动过程中,翼型升力系数滞后于摆角的变化,DTEF改变升力系数的能力降低,翼型阻力系数超前于摆角的变化,DTEF改变阻力系数的能力增加,此动态效应随摆动周期减小而增强,并在翼型表面压力系数与尾迹涡量上有一定体现.Parametric programming was adopted on the modeling of deformable trailing edge flap （DTEF） to realize its flexible deformation and control, based on which numerical simulations were conducted to analyze the effects of DTEF on aerodynamic performance of the wind turbine airfoil and to study its flow mechanism respectively under static and dynamic conditions. Results show that under static conditions, the angle of flap affects the lift coefficient and drag coefficient obviously; with the rise of attack angle, the ability of DTEF reduces in changing the aerodynamic performance of the airfoil, and its influence on neigh-boring flow field weakens accordingly. Swing DTEF makes the change of lift coefficient of airfoil lags the change of flap angle, with reduced ability of DTEF on the control of lift coefficient; whereas swing DTEF makes the change of drag coefficient leads the change of flap angle, with enhanced ability of DTEF on the control of drag eoefficient; these unsteady effects of flap oscillation are enhanced with the decrease of the oscillation cycle, reflecting in the variation of surface pressure coefficient of airfoil and in the development of wake vortex.

关 键 词：风力机翼型 气动性能 柔性襟翼 计算流体力学 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]