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TECHNICAL PAPERS

Large Eddy Simulation of a Flow Past a Free Surface Piercing Circular Cylinder

[+] Author and Article Information
T. Kawamura, S. Mayer, A. Garapon, L. Sørensen

International Research Centre for Computational Hydrodynamics (ICCH), Agern Allé 5, 2970 Hørsholm, Denmark

J. Fluids Eng 124(1), 91-101 (Aug 24, 2001) (11 pages) doi:10.1115/1.1431545 History: Received May 22, 2000; Revised August 24, 2001
Copyright © 2002 by ASME
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References

Figures

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Definition of the coordinate system
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Grid system (Grid-B) used for the simulations of a flow past a surface-piercing circular cylinder at Re=2.7×104
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Computed and measured mean surface elevation around a surface-piercing circular cylinder at Re=2.7×104 and Fr=0.8
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Computed and measured r.m.s of the surface fluctuation around a surface-piercing circular cylinder at Re=2.7×104 and Fr=0.8
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Profiles of the time-averaged elevation and r.m.s. fluctuation of the surface at Fr=0.8: (a) x1=0.9, (b) x1=2.0
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Profiles of the time-averaged elevation of the surface: (a) x1=0.9, (b) x1=2.0
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Profiles of the r.m.s. fluctuation of the surface elevation: (a) x1=0.9, (b) x1=2.0
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Contours for the time-averaged streamwise velocity component at Fr=0.8: (a) x1=1.0, (b) x1=2.5. The contour interval is 0.1. Dotted lines denote negative values.
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The vertical profiles of the computed and measured mean streamwise velocity at Fr=0.8: (a) x1=2.5,x2=0, (b) x1=4.5,x2=0, (c) x1=2,x2=1
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Time-averaged streamwise vorticity at Fr=0.8: (a) x1=1.0, (b) x1=2.5. Solid and dotted lines denote clockwise and counterclockwise rotation, respectively. Contour interval is 0.5.
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Contours of the transverse component of the time-averaged vorticity at Fr=0.8: (a) x2=1.0, (b) x2=2.0.
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Comparison of the instantaneous vertical vorticity component at Fr=0.8 on horizontal planes: (a) on the free surface, (b) x3=−0.6, (c) x3=−1.0, (d) x3=−4.0. Contour interval is 0.4
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Profiles of the computed r.m.s. velocity fluctuations, u1rms (solid), u2rms (dashed), and u3rms (dot-dashed) at Fr=0.8: (a) x1=2.5,x2=0, (b) x1=4.5,x2=0, (c) x1=2,x2=1
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Vertical variation of the velocity signals in the wake (x1=2,x2=1) at Fr=0.8
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Sectional drag and lift coefficients of a surface-piercing circular cylinder at Re=2.7×104 and Fr=0.8

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