High-frequency rotary oscillations control of flow around cylinder at Re = 1.4 x 10<sup>5</sup>

Journal article (2016)

Authors

Egor Palkin Novosibirsk State University, International Tomography Center SB RAS
M Hadziabdic International University of Sarajevo
K. Hanjalic Novosibirsk State University, ChemE/Transport Phenomena - AS
Research Group
ChemE/Transport Phenomena (AS) (TU Delft)
Copyright: © 2016 Egor Palkin, M Hadziabdic, K. Hanjalic
DOI: https://doi.org/10.1088/1742-6596/754/6/062006
More Info
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Published Date

2016

Language

English

Faculty

Applied Sciences

Department

ChemE/Chemical Engineering

Research Group

ChemE/Transport Phenomena

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.