In the present study, results of a flow visualization study on the flow around a square cylinder with dissimilar leading edges are presented. The radii of the leading edges of the cylinder ‘r1’ and ‘r2’ are such that the ratio r1/ r2 is systematically varied from 0 to 1. The flow structures around the cylinder with different leading edge radii particularly the vortex shedding mode and mechanism are investigated. For studies with stationary as well as oscillated cylinder cases, the results are taken at a Reynolds number value of 2100. For the oscillated case, a special mechanism is made to oscillate the cylinders at a desired amplitude and frequency. That is, the cylinder undergoes forced oscillation in this case. Results indicate that dissimilar leading edges bring notable changes in the near-wake flow structures of a square cylinder. For the stationary cylinder cases, the vortex formation length decreases with increase in the r1/ r2 ratio. Flow structures are also found to be influenced by the amplitude ratio (amplitude to body size ratio); the higher the amplitude, the larger the size of vortices shed per cycle of cylinder oscillation. In view of marine structures and building sections with similar geometries, the present results carry considerable practical significance.
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ASME 2014 Pressure Vessels and Piping Conference
July 20–24, 2014
Anaheim, California, USA
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
978-0-7918-4601-8
PROCEEDINGS PAPER
Effect of Dissimilar Leading Edges on the Flow Structures Around a Square Cylinder Available to Purchase
Arunkumar Kumaran Nair,
Arunkumar Kumaran Nair
Amrita University, Kollam, KL, India
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R. Ajith Kumar,
R. Ajith Kumar
Amrita University, Kollam, KL, India
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Hariprasad Chakkalaparambil Many
Hariprasad Chakkalaparambil Many
Amrita University, Kollam, KL, India
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Arunkumar Kumaran Nair
Amrita University, Kollam, KL, India
R. Ajith Kumar
Amrita University, Kollam, KL, India
Hariprasad Chakkalaparambil Many
Amrita University, Kollam, KL, India
Paper No:
PVP2014-28287, V004T04A028; 10 pages
Published Online:
November 18, 2014
Citation
Nair, AK, Kumar, RA, & Many, HC. "Effect of Dissimilar Leading Edges on the Flow Structures Around a Square Cylinder." Proceedings of the ASME 2014 Pressure Vessels and Piping Conference. Volume 4: Fluid-Structure Interaction. Anaheim, California, USA. July 20–24, 2014. V004T04A028. ASME. https://doi.org/10.1115/PVP2014-28287
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