Viscous near-wall flow in a wake of circular cylinder at moderate Reynolds numbers
- 作者: Okhotnikov D.1, Molochnikov V.2,3, Mazo A.1, Malyukov A.2, Goltsman A.2, Saushin I.2
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隶属关系:
- Kazan Federal University
- Kazan Scientific Center of RAS
- Kazan National Research Technical University named after A.N. Tupolev
- 期: 卷 24, 编号 6 (2017)
- 页面: 873-882
- 栏目: Article
- URL: https://journals.rcsi.science/1531-8699/article/view/217162
- DOI: https://doi.org/10.1134/S0869864317060063
- ID: 217162
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详细
Here we present the results of experimental investigation of a cross flow around a circular cylinder mounted near the wall of a channel with rectangular cross section. The experiments were carried out in the range of Reynolds numbers corresponding to the transition to turbulence in a wake of the cylinder. Flow visualization and SIV-measurements of instantaneous velocity fields were carried out. Evolution of the flow pattern behind the cylinder and formation of the regular vortex structures were analyzed. It is shown that in the case of flow around the cylinder, there is no spiral motion of fluid from the side walls of the channel towards its symmetry plane, typical of the flow around a spanwise rib located on the channel wall. The laminar-turbulent transition in the wake of the cylinder is caused by the shear layer instability.
作者简介
D. Okhotnikov
Kazan Federal University
Email: vmolochnikov@mail.ru
俄罗斯联邦, Kazan
V. Molochnikov
Kazan Scientific Center of RAS; Kazan National Research Technical University named after A.N. Tupolev
编辑信件的主要联系方式.
Email: vmolochnikov@mail.ru
俄罗斯联邦, Kazan; Kazan
A. Mazo
Kazan Federal University
Email: vmolochnikov@mail.ru
俄罗斯联邦, Kazan
A. Malyukov
Kazan Scientific Center of RAS
Email: vmolochnikov@mail.ru
俄罗斯联邦, Kazan
A. Goltsman
Kazan Scientific Center of RAS
Email: vmolochnikov@mail.ru
俄罗斯联邦, Kazan
I. Saushin
Kazan Scientific Center of RAS
Email: vmolochnikov@mail.ru
俄罗斯联邦, Kazan