University of Illinois Urbana-Champaign

Effect of an Internal Rotational Nonlinear Attachment on the Vortex-Induced Vibration of a Rigid Circular Cylinder in a Subcritical Incompressible Flow

Tumkur, Ravi K.R.; Pearlstein, Arne J.; Masud, A.; Gendelman, Oleg V.; Bergman, Lawrence A., Vakakis, Alexander F.

Content Files
ENOC2014_RKR_Tumkur_et_al_Final_06082014.pdf

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https://hdl.handle.net/2142/99143

Description

Title
Effect of an Internal Rotational Nonlinear Attachment on the Vortex-Induced Vibration of a Rigid Circular Cylinder in a Subcritical Incompressible Flow
Author(s)
  • Tumkur, Ravi K.R.
  • Pearlstein, Arne J.
  • Masud, A.
  • Gendelman, Oleg V.
  • Bergman, Lawrence A., Vakakis, Alexander F.
Issue Date
2014-07-06
Keyword(s)
Fluid Dynamics, Incompressible Flows, Vortex Induced Vibration, Energy Harvesting
Date of Ingest
2018-03-05T16:57:15Z
Abstract
“Vortex-induced vibration” (VIV) of a sprung cylinder is a familiar fluid-structure interaction phenomenon occurring over a wide range of flow Reynolds number (Re). From a dynamical systems perspective, at critical Reynolds number (Rec), the fixed point of the wake oscillator loses its stability resulting in limit-cycle oscillation, which is a well known supercritical Hopf bifurcation. In this paper, we discuss the relation between the critical Reynolds number (Rec) for the Hopf bifurcation and the stiffness of the cylinder for a sprung rigid circular cylinder. In addition, we introduce a rotational “nonlinear energy sink” (NES) into the system and study its effect on Rec in subcritical flow regime.
Publisher
Institute of Mechanics and Mechatronics, Technical University of Vienna, Austria, A-1040 Vienna, Austria.
Type of Resource
text
Genre of Resource
Conference Paper / Presentation
Permalink
http://hdl.handle.net/2142/99143

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