High-frequency rotary oscillations control of flow around cylinder at Re = 1.4 x 105

Journal Article (2016)
Author(s)

Egor Palkin (International Tomography Center SB RAS, Novosibirsk State University)

M. Hadziabdic (International University of Sarajevo)

K Hanjalic (Novosibirsk State University, TU Delft - ChemE/Transport Phenomena)

Research Group
ChemE/Transport Phenomena
Copyright
© 2016 Egor Palkin, M Hadziabdic, K. Hanjalic
DOI related publication
https://doi.org/10.1088/1742-6596/754/6/062006
More Info
expand_more
Publication Year
2016
Language
English
Copyright
© 2016 Egor Palkin, M Hadziabdic, K. Hanjalic
Research Group
ChemE/Transport Phenomena
Issue number
6
Volume number
754
Pages (from-to)
1-5
Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Abstract

We perform a series of URANS simulations of the flow over a rotary oscillating cylinder at Re = 1.4 105 to study the possible reduction of the drag and lift forces acting on the body when the rigid wall is rotary oscillating around the axis of symmetry. Two parameters of the external forcing are varied, i.e. the amplitude of rotation and the frequency. We find that the high-frequency and relatively high-amplitude forcing leads to the drag reduction of 78% compared to the non-rotating case. The oscillations (rms) of drag and lift coefficients are also significantly reduced.