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Effect of steady rotation on low Reynolds number vortex shedding behind a circular cylinder

Ramesh, ON and Patwardhan, Saurabh S (2013) Effect of steady rotation on low Reynolds number vortex shedding behind a circular cylinder. In: Journal of Fluids and Structures, 41 . pp. 175-186.

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Official URL: http://dx.doi.org/10.1016/j.jfluidstructs.2013.05....


In this paper control of oblique vortex shedding in the wake behind a straight circular cylinder is explored experimentally and computationally. Towards this, steady rotation of the cylinder about its axis is used as a control device. Some limited studies are also performed with a stepped circular cylinder, where at the step the flow is inevitably three-dimensional irrespective of the rotation rate. When there is no rotation, the vortex shedding pattern is three dimensional as described in many previous studies. With a non-zero rotation rate, it is demonstrated experimentally as well as numerically that the shedding pattern becomes more and more two-dimensional. At sufficiently high rotation rates, the vortex shedding is completely suppressed.

Item Type: Journal Article
Publication: Journal of Fluids and Structures
Publisher: Elsevier Science
Additional Information: Copyright of this article belongs to Elsevier Science.
Keywords: Oblique Vortex Shedding; Rotation; Stepped Cylinder
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited: 22 Oct 2013 12:06
Last Modified: 22 Oct 2013 12:06
URI: http://eprints.iisc.ac.in/id/eprint/47548

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