摘要
基于某2.0 MW风机叶片,将其在原翼型基础上改进为钝后缘翼型,运用RFOIL工具及ViternaCorrigan失速模型计算得到翼型全攻角范围内的气动数据,然后运用FOCUS等软件计算了应用钝后缘翼型的叶片在气动和结构特性方面的变化。计算显示,适当在叶根区域应用钝后缘翼型,对叶片的气动特性影响不明显,却能显著提升叶片的扭转、挥舞和摆振刚度,提高叶片的结构安全裕度和结构设计的灵活性。
A 2.0 MW blade profile is improved to flatback airfoils from the original one. RFOIL tool and Viterna-Corrigan stall profile are used to obtain the aerodynamic characteristics of flatback airfoils at full range of angle of attack. Then, the change of flatback airfoil on aerodynamics and structure properties of blade is investigated by FOCUS and other software. According to the analysis, applying flatback airfoils on root region in a proper way will not influence aerodynamic performance too much, but the blade stiffness will be improved significantly. All these changes show an optimistic effect on blade performance and bring more flexibility in blade structure design.
出处
《可再生能源》
CAS
北大核心
2015年第8期1170-1178,共9页
Renewable Energy Resources
基金
国家科技支撑计划基金项目(2006BAA01A00)
河北省国防科工局军民结合专项资金项目(2013044)
关键词
钝后缘翼型
风力机叶片
气动性能
叶片结构
flatback airfoils
wind turbine blades
aerodynamic characteristics
blade structure
