覆冰粗糙度对翼型气动特性影响的数值研究  

Numerical study of the effect of ice roughness on the aerodynamic characteristics of symmetric and asymmetric airfoils

作　　者：何志辉 张永恒 张旭耀 张沥 李泽 杨文涛 He Zhihui;Zhang Yongheng;Zhang Xuyao;Zhang Li;Li Ze;Yang Wentao(School of New Energy&Power Engineering,Lanzhou JiaoTong University,Lanzhou 730070,China;Three Gorges New Energy Tai Yang Shan Power Co.Ltd.,Wuzhong 751999,China)

机构地区：[1]兰州交通大学,新能源与动力工程学院,甘肃兰州730070 [2]三峡新能源太阳山发电有限公司,宁夏吴忠751999

出　　处：《极地研究》2023年第4期566-579,共14页Chinese Journal of Polar Research

基　　金：国家自然科学基金地区基金(51566007)资助。

摘　　要：寒冷地区风力发电机运行时叶片极易结冰,结冰改变了叶片形貌,从而影响了叶片的气动性能。为更好地研究分析风力机结冰叶片翼型表面覆冰粗糙度对其气动性能的影响规律,采用计算流体力学方法,对比研究了对称型(NACA-0012)及非对称型(NACA-23012)两种翼型在相同结冰条件和不同覆冰粗糙度参数下的气动特性。结果表明,NACA0012及NACA23012两种翼型前缘生成霜冰时,覆冰粗糙度对两种结冰翼型气动性能均有显著影响;当两种翼型前缘生成角状冰时,NACA23012结冰翼型气动性能受不同覆冰粗糙度的影响较小,仅仅增加翼型后缘分离涡宽度,对NACA0012结冰翼型影响较大,使其失速攻角延迟。此外,当翼型前缘生成霜冰时,NACA23012霜冰翼型阻力系数增长速度高于NACA0012结冰翼型。When wind turbines operate in cold regions,the blade is prone to ice formation,which changes the blade’s shape and affects its aerodynamic performance.To assess the influence of icing surface roughness on the aerodynamic performance of wind turbine blade airfoils,the aerodynamic characteristics of two types of airfoils,symmetric(NACA-0012)and asymmetric(NACA-23012),were compared under the same icing conditions and icing roughness parameters using a computational fluid dynamics method.The results showed that when rime ice was generated at the leading edge of both NACA0012 and NACA23012 airfoils,the ice roughness had a significant effect on the aerodynamic performance of both icing airfoils.When horn ice was generated at the leading edge of both airfoils,the effect of ice roughness on the aerodynamic performance of the NACA23012 icing airfoil was small,and only increased the width of the separation vortex at the trailing edge of the airfoil.There was,a greater effect of horn ice on the NACA0012 airfoil than the NACA23012 airfoil,which delayed the stall angle of attack of NACA0012 icing airfoil.In addition,when rime ice was generated at the leading edge of both NACA0012 and NACA23012 airfoils,the drag coefficient of NACA23012 with rime ice airfoil increased faster than that of NACA0012 icing airfoil.

关 键 词：风力机 寒冷地区 翼型结冰 覆冰粗糙度 气动性能 

分 类 号：TM315[电气工程—电机]