Vortical structures in a shallow wake of the flow around a confined cylinder at Re=3750

Egor Palkin; Rustam Mullyadzhanov

doi:10.1051/epjconf/201715900034

EPJ

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Proceedings

Open Access

EPJ Web of Conferences 159, 00034 (2017)
https://doi.org/10.1051/epjconf/201715900034

Vortical structures in a shallow wake of the flow around a confined cylinder at Re=3750

Egor Palkin¹^,2 and Rustam Mullyadzhanov¹^,2

¹ Institute of Thermophysics SB RAS, 630090, Novosibirsk, Russia
² Novosibirsk State University, 630090, Novosibirsk, Russia

Published online: 25 October 2017

Abstract

We study the flow over a cylinder placed between two parallel rigid walls using Large - eddy simulations. The Reynolds number based on the inflow velocity and diameter of the cylinder is 3750 corresponding to the subcritical regime with laminar separation.The comparison of the time - averaged flow patterns shows very good agreement with experiments.The unsteadiness of the recirculating bubble features the low - frequency modulation observed for the first time.

© The authors, published by EDP Sciences, 2017

This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).