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.

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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

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

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

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