用粒子图像测速法研究边条涡的性质

北京大学学报（自然科学版）

用粒子图像测速法研究边条涡的性质

李轶明, 孙智利, 颜大椿

北京大学力学与工程科学系，北京，100871

收稿日期:2002-07-12 出版日期:2003-09-20 发布日期:2003-09-20

An Experimental Investigation on Properties of
Strake Vortices Using Particle Image Velocimetry

LI Yiming, SUN Zhili, YAN Dachun

Department of Mechanics and Engineering Science, PKU, Beijing, 100871

Received:2002-07-12 Online:2003-09-20 Published:2003-09-20

摘要/Abstract

摘要： 在风洞中应用粒子图像测速法对边条机翼模型产生的边条涡的各种特性进行了实验研究。实验主要测量了各种攻角下边条后缘、基本翼的1/2平均气动弦、立尾前缘及立尾后缘四个位置与机身轴线垂直的截面内的流场，同时利用二维谱分析的方法对测得的二维速度场进行分析得出边条涡的能量谱。实验结果表明边条涡强度随攻角呈平方关系增长，边条涡的破碎形态为单螺旋破碎。

关键词: 边条涡, 粒子图像测速, 二维谱分析

Abstract: An experimental investigation on the properties of vortices generated by the strake-wing has been carried out in the wind tunnel using Particle Image Velocimetry (PIV). Measurements of flowfield in the cross-sections vertical to the axes of the model have been made with various attack-angles at the trailing edge of the strake, the 1/2 mean aerodynamics chord of the basic wing and also the leading and trailing edges of the vertical tail. Two-dimensional spectrum analysis has been used to calculate the energy spectra of the flowfield with the strake vortices in the wavenumber space. Results indicate that the strength of the strake vortex increases with a quadric function of the attack angle and the type of vortex breakdown is spiral breakdown in this experiment.

Key words: strake vortex, particle image velocimetry, two-dimensional spectrum analysis

中图分类号:

TN249
V224.5

李轶明, 孙智利, 颜大椿. 用粒子图像测速法研究边条涡的性质[J]. 北京大学学报（自然科学版）.

LI Yiming,SUN Zhili,YAN Dachun. An Experimental Investigation on Properties of
Strake Vortices Using Particle Image Velocimetry[J]. Acta Scientiarum Naturalium Universitatis Pekinensis.

导出引用管理器 EndNote|Ris|BibTeX

链接本文: https://xbna.pku.edu.cn/CN/

https://xbna.pku.edu.cn/CN/Y2003/V39/I5/641