摘要
翼型的升力和阻力特性直接影响到叶轮机或机翼的性能,传统风力机翼型的外形是基于经验和半经验的方法得到,本文采用变域变分有限元方法,以NRELS809翼型为原形,通过改进其叶片表面的目标压力分布,进行该翼型的改进设计,并对新设计出的翼型在0°～20°攻角范围内进行CFD数值模拟,得到的结果与原始S809翼型在升阻力系数、失速性能等方面进行对比,结果表明改进的S809具有更好的气动性能。
The performance of turbomachinery and airplane＇s wings is directly decided by the lift and drag characteristics of their airfoil adopted.The shape of traditional wind turbine airfoils is usually obtained based on empirical or semi-empirical methods.However,in this paper,we used the variable-domain variational finite element method（FEM） to obtain an improved design of a S809 airfoil through altering the distribution of pressure on its surface.Meanwhile,CFD simulations of this improved designed S809 airfoil were conducted for a range of 0～20 degree angle of attack and numerical results have proven that this improved design of S809 airfoil has better aerodynamic characteristics compared to the original one.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2011年第5期779-782,共4页
Journal of Engineering Thermophysics
基金
国家自然科学基金资助项目(No.50836006)
上海市基础研究重点项目资助(No.09JC1405800)
关键词
风力机
气动反设计
升力系数
wind turbine
aerodynamic inverse design
lift coefficient
