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TECHNICAL PAPERS

Large Eddy Simulation of a Smooth Circular Cylinder Oscillating Normal to a Uniform Flow

[+] Author and Article Information
Mustafa Tutar

Makine Muhendisligi Bolumu, Mersin Universitesi, Ciflikkoy 33160, Mersin, Turkey   e-mail: m.tutar@mersin.edu.tr

Arne E. Holdo̸

Aeronautical, Civil and Mechanical Engineering Department, University of Hertfordshire, Hatfield Herts, AL 10 9 AB U.K.

J. Fluids Eng 122(4), 694-702 (May 05, 2000) (9 pages) doi:10.1115/1.1287270 History: Received September 21, 1999; Revised May 05, 2000
Copyright © 2000 by ASME
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References

Figures

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Instantaneous vorticity plots taken with constant contour values at U/fcD=5.4 and at Ut/D=10.8. Cylinder oscillates in the transverse direction in a uniform flow (Re=2.4×104 and A/D=0.11).
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Correlation coefficients from 3-D LES simulation for velocity components and pressure at P(x, y)=(8D, 9D) for a transversely oscillating cylinder at U/fcD=5.4 (Re=2.4×104 and A/D=0.11)
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Computational domain and the imposition of boundary conditions for 2-D LES simulations for a cylinder transversely oscillating in a uniform flow at Re=2.4×104 and A/D=0.11; (a) Global mesh (34,804 nodes); (b) Imposed boundary conditions
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Computational setup for 3-D LES simulation for transversely oscillating circular cylinder; (a) Size of domain and imposition of boundary conditions; (b) Logical description of the 3-D model
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Time averaged velocity distribution along the centerline of a stationary circular cylinder at a Re=1.4×105 for LES simulations containing different mesh resolutions and application range of damping term
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The comparison of global time averaged shear stress distribution for LES simulations with different mesh resolutions and experimental data of Cantwell and Coles 30 due to turbulence at x/D=1.0 for a stationary cylinder in a uniform flow at Re=1.4×105
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Instantaneous vorticity contours taken with a constant contour value for 2-D LES simulation for a cylinder transversely oscillating in a uniform flow at Re=2.4×104 and A/D=0.11 with varying reduced velocity U/fcD; (a) U/fcD=3; (b) U/fcD=5.4; (c) U/fcD=9.0
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Time averaged pressure distribution over two oscillation cycles for all 2-D LES simulations for different values of U/fcD for a cylinder transversely oscillating in a uniform flow at Re=2.4×104 and A/D=0.11. Experimental data is for a stationary cylinder at Re=2.0×104 (Yokuda and Ramaprian 31).
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Instantaneous velocity fields obtained from 3-D simulation at selected planes along the flow domain at Ut/D=10.8. Cylinder oscillates in the transverse direction in a uniform flow at U/fcD=5.4 (Re=2.4×104 and A/D=0.11).
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Instantaneous velocity vector fields obtained from 2-D and 3-D LES simulations at U/fcD=5.4 and at Ut/D=10.8; (a) 2-D LES; (b) 3-D LES at z=2.4D; (c) 3-D LES at z=0.8D

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