Numerical Investigation On Vortex-induced
Motion Of A Pivoted Cylindrical Body In
Uniform Flow
Author(s)
H. G. Sung, H. Baek, S. Hong & J.-S. Choi
Abstract
Based upon our previous study presented in FSI 2011 (\“Numerical simulation of
vortex-induced vibration of a pivoted cylinder using the spectral element
method”, Fluid Structure Interaction, 2011), we demonstrate by numerical
computation the effect of cross-sectional shape of cylinder which is pivoted at
the wake of the body for the energy extraction via enhancement of VIV motion.
The fluid equation is solved by using a computer code based upon the spectral
element method (SEM) with the help of the arbitrary Lagrangian-Eulerian (ALE)
framework. At first, the circular shape is tested, and then ellipses, whose ratios of
the minor axis to the major axis are 0.6 and 0.8, are compared with the case of
the circular shape. We have found that ellipses enlarge displacements almost two
times at Reynolds number 500. It was also found that increased drag forces
contribute positively to the excitation torques.
Keywords: VIV, energy extraction, pivoted cylinder, Spectral Element Method
(SEM), coupling of body motion with flow.
Keywords
VIV, energy extraction, pivoted cylinder, Spectral Element Method(SEM), coupling of body motion with flow.
Related Book
Other papers in this volume
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