摘要
针对S902翼型在Re=1.5×106情形下安装Gurney襟翼时气动载荷的变化开展数值模拟研究。通过求解Navier-Stokes方程,对S902翼型在干净翼和安装Gurney襟翼情形下翼型绕流流场进行数值模拟,并将干净翼数值模拟结果与试验结果进行对比,重点讨论Gurney襟翼安装高度、安装角度及安装位置等因素对翼型气动载荷的影响。数值模拟结果表明:同一安装位置安装高度增加其增升效应越明显,但阻力也会大幅增加;同一安装位置不同安装角度时增升效果和阻力增加量都随安装角度的减小而减小;同一安装高度加载于后缘下表面时存在一个有效增升区域,而安装于上表面时则会导致升力减小、阻力增加。
Numerical simulation was undertaken to determine the effects of aerodynamic load control with Gurney flap on blade airfoil S902 of wind turbine at chord Reynolds number of 1.5 × 10^6. The flow over S902 airfoil with and without gurney flap were simulated by solving Navier-Stokes equation. The comparison between the simulated data without Gurney flap and the experiment data had been carried out in order to verify the validity of the computa- tional model. Numerical simulation over an S902 airfoil with Gurney flap shows that the aerodynamic performance of the airfoil is strongly influenced by the height; inclined angle and location of the gurney flap. It is observed that the lift and drag are increased with the increase of the height of the Gurney flap for the same location, and then the increasing amount of lift and drag for the same location and differenf angle are decreased with decrease of the inclined angle of Gurney flap. With the Gurney flap moving from the effect of increasing lift is deteriorated gradually, so these is an trailing edge towards the leading edge direction the effective region that lift can increase. When the gurney flap locates on upper surface, the lift is decreased for all angles of attack, and the drag is increased remarkably.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2012年第12期2159-2165,共7页
Acta Energiae Solaris Sinica
基金
国家高技术研究发展(863)计划(2007AA05Z448)
