Viscous near-wall flow in a wake of circular cylinder at moderate Reynolds numbers
- Авторы: Okhotnikov D.1, Molochnikov V.2,3, Mazo A.1, Malyukov A.2, Goltsman A.2, Saushin I.2
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Учреждения:
- Kazan Federal University
- Kazan Scientific Center of RAS
- Kazan National Research Technical University named after A.N. Tupolev
- Выпуск: Том 24, № 6 (2017)
- Страницы: 873-882
- Раздел: Article
- URL: https://journals.rcsi.science/1531-8699/article/view/217162
- DOI: https://doi.org/10.1134/S0869864317060063
- ID: 217162
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Аннотация
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.
Об авторах
D. Okhotnikov
Kazan Federal University
Email: vmolochnikov@mail.ru
Россия, Kazan
V. Molochnikov
Kazan Scientific Center of RAS; Kazan National Research Technical University named after A.N. Tupolev
Автор, ответственный за переписку.
Email: vmolochnikov@mail.ru
Россия, Kazan; Kazan
A. Mazo
Kazan Federal University
Email: vmolochnikov@mail.ru
Россия, Kazan
A. Malyukov
Kazan Scientific Center of RAS
Email: vmolochnikov@mail.ru
Россия, Kazan
A. Goltsman
Kazan Scientific Center of RAS
Email: vmolochnikov@mail.ru
Россия, Kazan
I. Saushin
Kazan Scientific Center of RAS
Email: vmolochnikov@mail.ru
Россия, Kazan