气动翼型涡流发生器与风力机翼型同步优化设计
Aerodynamic Shape Integrated Design of Wind Turbine Airfoils and Vortex Generators
汪泉 1杨书益 1胡梦杰 1王环均1
作者信息
- 1. 湖北工业大学机械工程学院,湖北 武汉 430068
- 折叠
摘要
针对目前风力机叶片翼型与涡流发生器相互独立的串行设计方法,导致不能最大限度的设计出气动性能最佳的风力机新叶片加装新型涡流发生器.这里提出带气动翼型的涡流发生器与风力机叶片翼型同步设计方法,利用B样条函数分别表达叶片翼型与涡流发生器气动形状,以最大升阻比及失速前最大升力系数为多目标函数建立优化数学模型,结合CFD技术与粒子群算法对原始叶片翼型DU97-W-300与CLARKY翼型涡流发生器进行同步优化,优化结果表明:相比原始叶片翼段加装CLARKY翼型涡流发生器,优化后的升力系数为2.378,提高了9.3%,升阻比为63.335,提高了7.5%;且对优化前后的流线图及涡量云图进行了对比分析,说明优化后叶片加装涡流发生器翼型可产生更大的诱导涡,能够有效抑制叶片表面流体分离.这里研究对于叶片与涡流发生器的设计及应用具有很好的参考与借鉴意义.
Abstract
The current design method for wind turbine airfoils and vortex generators(VGs)is independent,which cannot be used to simultaneously design wind turbine airfoils and VGs with high aerodynamic performance.Therefore,an aerodynamic shape integrated design method for wind turbine airfoils and VGsis proposed.The aerodynamic shaped VGsinstead of plate VGsare in-troduced to be installed on wind turbine blades.The blade airfoil and aerodynamic shaped VGs are both expressed by B-spline function.Then,the optimal mathematic model of wind turbine airfoil with aerodynamic shaped VGs is established,for which the multi-objective functions are maximum lift to drag ratio plus maximum lift coefficient.DU97-W-300 and CLARKY-117 air-foils are selected as initial objects to be optimized simultaneously by combining CFD simulation and particle swarm optimization(PSO)algorithm.The optimal results indicate that the maximum lift coefficient and lift to drag ratio of the optimized blade with novel VGs show the increase of 9.3%and 7.5%respectively,compared to initial design.In addition,through the comparative analysis of streamlines and vorticity contours,the new blade with novel VGs could produce larger induced vortex and could effec-tively restrain the fluid separation on the blade surface.This study provides a good reference to the design and application of wind turbine airfoils and VGs.
关键词
风力机叶片/涡流发生器/一体化设计/B样条函数/CFD技术Key words
Wind Turbine Blade/Vortex Generator/Integrated Design/B-Spline Function/CFD引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据