Experimental study on orbital response and flow behavior behind a freely suspended cylinder

Experimental study on orbital response and flow behavior behind a freely suspended cylinder This paper presents an experimental study of the trajectory and flow behavior behind a freely suspended circular cylinder in a uniform flow. The cylinder was suspended from a platform and the assembly was free to move freely in the horizontal plane. The trajectories of the cylinder and wake flow fields were captured using a camera and the Particle Image Velocimetry (PIV) technique, respectively. The effects of free stream velocity on the orbital response and vortex wake mode of the cylinder were examined. Depending on the free stream velocity, different trajectories of the suspended cylinder were observed such that: (i) with oscillations of negligible amplitude, similar to a stationary cylinder; (ii) oscillations like an elastically mounted cylinder; (iii) intermittent oscillations and horizontal translation; (iv) traversing downstream with large transverse oscillations. Finally it was observed that the vortex wake mode was sensitive to the location of the cylinder, and changed as the cylinder traveled downstream. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Ocean Engineering Elsevier

Experimental study on orbital response and flow behavior behind a freely suspended cylinder

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Publisher
Elsevier
Copyright
Copyright © 2015 Elsevier Ltd
ISSN
0029-8018
eISSN
1873-5258
D.O.I.
10.1016/j.oceaneng.2015.08.027
Publisher site
See Article on Publisher Site

Abstract

This paper presents an experimental study of the trajectory and flow behavior behind a freely suspended circular cylinder in a uniform flow. The cylinder was suspended from a platform and the assembly was free to move freely in the horizontal plane. The trajectories of the cylinder and wake flow fields were captured using a camera and the Particle Image Velocimetry (PIV) technique, respectively. The effects of free stream velocity on the orbital response and vortex wake mode of the cylinder were examined. Depending on the free stream velocity, different trajectories of the suspended cylinder were observed such that: (i) with oscillations of negligible amplitude, similar to a stationary cylinder; (ii) oscillations like an elastically mounted cylinder; (iii) intermittent oscillations and horizontal translation; (iv) traversing downstream with large transverse oscillations. Finally it was observed that the vortex wake mode was sensitive to the location of the cylinder, and changed as the cylinder traveled downstream.

Journal

Ocean EngineeringElsevier

Published: Nov 1, 2015

References

  • An overview of modeling and experiments of vortex-induced vibration of circular cylinders
    Gabbai, R.D.; Benaroya, H.

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