@inproceedings{7e2b05c647ef484d9a7671f5a06e6159,
title = "Influence of nose perturbations on behaviors of asymmetric vortices over slender body",
abstract = "The influence of nose perturbations on the behaviors of asymmetric vortices over a slender body with a three-caliber ogive nose has been studied in this paper. The tests of nose-disturbed slender body with surface pressure measurement have been conducted at low speed wind tunnel with subcritical Reynolds number of 1×105 at angle of attack α=50°. The experiments results show that the behaviors and structure of asymmetric vortices over a slender body are mainly controlled by manual perturbation on the nose of body compared with geometrical minute irregularities on the test model from the machining tolerances. The effect of perturbation axial location on asymmetric vortices is strongest if its location is near the model apex. There are four sensitive circumferential locations of manual perturbation at which bistable vortices over slender body are switched by the perturbation. The flowfield near the reattachment line of lee side is more sensitive to the perturbation, because the saddle point to saddle point topological structure in this reattachment flowfield is unstable. Various types of perturbation do not change the perturbation effect on the behaviors of bistable asymmetric vortices.",
author = "Deng Xueying and Chen Xuerui and Wang Yankui and Liu Peiqing",
year = "2002",
language = "英语",
isbn = "9781624101076",
series = "AIAA Atmospheric Flight Mechanics Conference and Exhibit",
publisher = "American Institute of Aeronautics and Astronautics Inc.",
booktitle = "AIAA Atmospheric Flight Mechanics Conference and Exhibit",
note = "AIAA Atmospheric Flight Mechanics Conference and Exhibit 2002 ; Conference date: 05-08-2002 Through 08-08-2002",
}