High-frequency rotary oscillations control of flow around cylinder at Re = 1.4 x 10&lt;sup&gt;5&lt;/sup&gt;

Palkin, Egor; Hadziabdic, M; Hanjalic, K.

doi:10.1088/1742-6596/754/6/062006

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

Title

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

Author

Palkin, Egor (International Tomography Center SB RAS; Novosibirsk State University)
Hadziabdic, M (International University of Sarajevo)
Hanjalic, K. (TU Delft ChemE/Transport Phenomena; Novosibirsk State University)

Date

2016

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.

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DOI

https://doi.org/10.1088/1742-6596/754/6/062006

ISSN

1742-6588

Source

Journal of Physics: Conference Series, 754 (6), 1-5

Part of collection

Institutional Repository

Document type

journal article