南京航空航天大学学报（英文版）2024，Vol.41Issue(4)：444-457,14.DOI:10.16356/j.1005⁃1120.2024.04.003
有限翼展机翼动态失速特性的数值研究
Numerical Investigations on Dynamic Stall Characteristics of a Finite Wing
摘要
Abstract
The paper examines the dynamic stall characteristics of a finite wing with an aspect ratio of eight in order to explore the 3D effects on flow topology,aerodynamic characteristics,and pitching damping.Firstly,CFD methods are developed to calculate the aerodynamic characteristics of wings.The URANS equations are solved using a finite volume method,and the two-equation k-ω shear stress transport(SST)turbulence model is employed to account for viscosity effects.Secondly,the CFD methods are used to simulate the aerodynamic characteristics of both a static,rectangular wing and a pitching,tapered wing to verify their effectiveness and accuracy.The numerical results show good agreement with experimental data.Subsequently,the static and dynamic characteristics of the finite wing are computed and discussed.The results reveal significant 3D flow structures during both static and dynamic stalls,including wing tip vortices,arch vortices,Ω-type vortices,and ring vortices.These phenomena lead to differences in the aerodynamic characteristics of the finite wing compared with a 2D airfoil.Specifically,the finite wing has a smaller lift slope during attached-flow stages,higher stall angles,and more gradual stall behavior.Flow separation initially occurs in the middle spanwise section and gradually spreads to both ends.Regarding aerodynamic damping,the inboard sections mainly generate unstable loading.Furthermore,sections experiencing light stall have a higher tendency to produce negative damping compared with sections experiencing deep dynamic stall.关键词
有限翼展机翼/动态失速/气动阻尼/三维效应Key words
finite wing/dynamic stall/aerodynamic damping/3D effects分类
航空航天引用本文复制引用
井思梦,曹宸恺,高远,招启军,赵国庆..有限翼展机翼动态失速特性的数值研究[J].南京航空航天大学学报（英文版）,2024,41(4):444-457,14.基金项目
This work was supported by the Na-tional Natural Science Foundation of China(No.12072156),the National Key Laboratory Foundation of China(No.61422202103),and the Priority Academic Program Devel-opment of Jiangsu Higher Education Institutions(PAPD). （No.12072156）
