【作者】 丁林； 张建国； 何钰皓；

【Author】 DING Lin;ZHANG Jian-guo;HE Yu-hao;Department of Civil Engineering, School of Architecture and Civil Engineering, Xiamen University;

【机构】 厦门大学建筑与土木工程学院土木工程系；

【摘要】 风机叶片的气动特性决定了风机的功率系数和气动荷载的大小,是风力机研究的关键和热点。风机叶片气动分析的准确性依赖于翼型气动数据计算的质量,估算出叶片控制截面的运行雷诺数,做边界层与非边界层网格划分方案的比选,基于ANSYS计算翼型的气动特性并作小攻角下的静态绕流分析。结果表明:翼型升力系数对网格精度的敏感性高于阻力系数,大厚度翼型气动特性模拟对网格精度的敏感性高于较薄的翼型;以FFA-W3-211翼型为代表的薄翼型尾缘的边界层分离现象与气动特性数据的变化刚好吻合,通过把气动特性数据和CFD模拟的静态绕流流场图结合起来分析,有利于风力发电机翼型气动性能的研究和优化设计。更多还原

【Abstract】 The aerodynamic characteristics of wind turbine blades determine the power coefficient and aerodynamic load of the wind turbine, which is the key and hotspot of wind turbine research.The accuracy of the aerodynamic analysis of the wind turbine blade depends on the quality of the aerodynamic data calculation of the airfoil. The operating Reynolds number of the blade control section is estimated, and the boundary layer and non-boundary layer meshing schemes are compared and selected. The aerodynamic characteristics of the airfoil are calculated based on ANSYS, and the static flow around the airfoil is analyzed at a small angle of attack. The results show that the lift coefficient of airfoil is more sensitive to grid accuracy than the drag coefficient, and the aerodynamic characteristics simulation of thick airfoil is more sensitive to grid accuracy than that of thin airfoil;The boundary layer separation phenomenon at the trailing edge of the thin airfoil represented by FFA-W3-211 airfoil coincides with the change of aerodynamic characteristic data. By combining the aerodynamic characteristic data with the static flow field diagram simulated by CFD, it is beneficial to the research and optimization design of the aerodynamic performance of the wind turbine airfoil.更多还原