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Vortex-Induced Vibrations of a Cylinder With a Control Rod in its Wake

[+] Author Affiliations
Francisco J. Huera-Huarte

Universitat Rovira i Virgili (URV), Tarragona, Spain

José I. Jiménez-González

Universidad de Jaén, Jaén, Spain

Paper No. OMAE2017-61471, pp. V002T08A034; 6 pages
doi:10.1115/OMAE2017-61471
From:
  • ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 2: Prof. Carl Martin Larsen and Dr. Owen Oakley Honoring Symposia on CFD and VIV
  • Trondheim, Norway, June 25–30, 2017
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-5764-9
  • Copyright © 2017 by ASME

abstract

We study the dynamics of a flexibly-mounted cylinder having a control rod in its near wake, when subject to a uniform cross-flow. The objective is to investigate the effect of a localized perturbation introduced in the near wake of the cylinder. The work consists of a parametric study with a rigid cylinder mounted in an air bearing rig, with its motion constrained to move in the direction transverse to the flow. The cylinder system is characterised by a low combined mass-damping parameter. During the experiments, the location of the rod will be fixed, but its size and the free stream velocity will be varied. The dynamic response of the cylinder will be measured using non-intrusive techniques. The vortex dynamics in the near wake of the system will also be described after measurements obtained using Digital Image Particle Velocimetry (DPIV). The objective is to understand the physical mechanisms of the fluid-structure interaction phenomena involved in the changes of the dynamic response of the cylinder when using the control rod.

Copyright © 2017 by ASME

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