实验流体力学2017，Vol.31Issue(5)：53-59,7.DOI:10.11729/syltlx20160194
基于翼尖涡物理特征的诱导阻力减阻机制实验研究
Experimental study on drag-reduction mechanisms based on the physical characteristic of tip vortex
摘要
Abstract
The drag-reduction mechanisms based on the physical characteristic of the tip vor-tex are investigated through experiments in the wind tunnel.Through 3DPIV (3D Particle Image Velocimetry)experiments,the physical characteristic of tip vortex is obtained,and the induced drag of wing is calculated based on the aerodynamic force measurement setup of wingtip proposed in this paper.Experimental results show that the non-dimensional circulation of the tip vortex in-creases with the increasing angle of attack and the wind speed.Meanwhile,with the decrease of the non-dimension circulation of the tip vortex or the increase of the spacing between the wing and the tip vortex,the induced drag becomes smaller and smaller.Specifically,the induced drag reduction can be achieved by inhibiting the non-dimensional intensity of the tip vortex,which weakens the interaction between the main wing and the tip vortex.关键词
翼尖涡/物理特征/诱导阻力/环量/减阻Key words
tip vortex/physical characteristic/induced drag/circulation/drag reduction分类
数理科学引用本文复制引用
黄文涛,向阳,王笑,刘洪,顾定一..基于翼尖涡物理特征的诱导阻力减阻机制实验研究[J].实验流体力学,2017,31(5):53-59,7.基金项目
973计划项目"大型客机减阻机理和方法研究"(2014CB744802) （2014CB744802）
