DOIONLINE

DOIONLINE NO - IJMPE-IRAJ-DOIONLINE-11435

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International Journal of Mechanical and Production Engineering (IJMPE)-IJMPE
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Volume Issue
Issue
Volume-6,Issue-3  ( Mar, 2018 )
Paper Title
Effect of Turbulence Parameters on Flow-Induced Vibrations in a Cross Flow Over Staggered Array of Cylinders
Author Name
Ji-Su Kim, Jongwoon Park, Hyeon-Kyeong Choi
Affilition
Nuclear & Energy Systems Department, Dongguk University, SENTEC, South Korea
Pages
17-20
Abstract
Effect of turbulent Prandtl numbers used in standard k-ɷ turbulence model on the flow induced vibrations for cross flows over staggered array of cylinders is quantified through computational fluid dynamic analyses. For 50-60% variations in the turbulent Prandtl numbers, the difference in the frequency ratios, the parameters for the vortex-induced vibration, are larger than 10 %. On the other hand, the difference in the reduced velocity, the parameter for fluid-elastic vibration, is3.6%.This result shows that the fluid-elastic vibration is far less sensitive to turbulence parameters. Index Terms - Flow Induced Vibration, Cross Flow, Array of Cylinders, Computational Fluid Dynamics, Standard k-ɷ turbulence model, Turbulent Prandtl Number.
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