摘要
为分析湍流度对低雷诺数大型风力机翼型气动性能的影响,以大型风力机翼型NREL S810为研究对象,采用风洞试验法,系统研究了湍流度对翼型NREL S810气动性能的影响,获得了翼型的升力系数、阻力系数和表面压力分布特性。结果表明:湍流度的存在使得S810翼型的气动力特性发生改变,最大升力系数先升高后降低,在湍流度为4.6%时翼型的升力系数最高;随着湍流度的增大,发生了明显的失速延迟现象,失速攻角持续后移,且湍流度增加会使得失速下降曲线变得平缓。
In order to analyze the effects of turbulence on the aerodynamic performance of a large wind airfoil with low Reynolds number,the aerodynamic performance of a large wind airfoil NREL S810 was systematically studied by wind tunnel test.The lift coefficient,drag coefficient and surface pressure distribution characteristics of the airfoil were obtained.The results show that the existence of turbulence changes the aerodynamic characteristics of S810 airfoil,and the maximum lift coefficient increases first and then decreases.The lift coefficient of S810 airfoil is the highest when the turbulence is 4.6%.With the increase of turbulence,the phenomenon of stall delay occurs,and the stall angle of attack continues to move backward,while the increase of turbulence makes the stall decline curve become flat.
作者
董孟辉
贾娅娅
刘庆宽
吕孟浩
刘念
DONG Meng-hui;JIA Ya-ya;LIU Qing-kuan;LYU Meng-hao;LIU Nian(School of Civil Engineering,Shijiazhuang Tiedao University,Shijiazhuang,Hebei 050043,China;State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures,Shijiazhuang Tiedao University,Shijiazhuang,Hebei 050043,China;Innovation Center for Wind Engineering and Wind Energy Technology of Hebei Province,Shijiazhuang,Hebei 050043,China)
出处
《工程力学》
EI
CSCD
北大核心
2023年第S01期307-312,共6页
Engineering Mechanics
基金
河北省自然科学基金项目(E2021210110)
河北省高端人才项目(冀办[2019]63号)
科技冬奥专项项目(21475402D)
国家自然科学基金项目(52208495)。
关键词
风力机翼型
风洞试验
湍流度
平均风压系数
气动性能
wind turbine airfoil
wind-tunnel test
turbulence degrees
mean wind pressure coefficient
aerodynamic performance
