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TECHNICAL PAPERS

Multiple Stable/Unstable Equilibria of a Cylinder in the Wake of an Upstream Cylinder

[+] Author and Article Information
Wusheng Wu, Shan Huang, Nigel Barltrop

Department of Naval Architecture and Marine Engineering, Universities of Glasgow and Strathclyde, 100 Montrose Street, Glasgow G4 0LZ, Scotland, UK

J. Offshore Mech. Arct. Eng 125(2), 103-107 (Apr 16, 2003) (5 pages) doi:10.1115/1.1555111 History: Received July 01, 2001; Revised April 01, 2002; Online April 16, 2003
Copyright © 2003 by ASME
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References

Simpson,  A., 1971, “Wake Induced Flutter of Circular Cylinders: Mechanical Aspects,” Aeronaut. Q., May, pp. 101–118.
Tsui,  Y. T., 1977, “One Wake-Induced Flutter of a Circular Cylinder in the Wake of Another,” ASME J. Appl. Mech., June, pp. 194–200.
Tsui,  Y. T., 1986, “On Wake-Induced Vibration of a Conductor In the Wake of Another via a 3-D Finite Element Method,” J. Sound Vib., 107(1), pp. 39–58.
Overvik,  T., Moe,  G., and Hjort-Hansen,  1983, “Flow Induced Motions of Multiple Risers,” ASME J. Energy Resour. Technol., 105, pp. 83–89.
Price, S. J., Paidoussis, M. P., Mark, B., and Mureithi, W. N., 1989, “Current-induced Oscillations and Instabilities of a Multi-tube Flexible Riser: Water Tunnel Experiments,” OMAE89, 1 , pp. 447–454.
Price,  S. J., Paidoussis,  M. P., and Al-Jabir,  A. M., 1993, “Current-Induced Fluidelastic Instability of a Multi-tube Flexible Riser: Theoretical Results and Comparison with Experiments,” ASME J. Offshore Mech. Arct. Eng., 115(4), pp. 206–212.
Paidoussis,  M. P., Price,  S. J., and Mark,  B., 1988, “Current Induced Oscillation and Instabilities of a Multi-Tube Flexible Risers,” J. Fluids Struct., 2, pp. 503–513.
Huse, E., 1993, “Interaction In Deep-Sea Riser Arrays,” 25th Annual Offshore Technology Conference, Houston, TX, 2 , pp. 313–322.
Huse, E., 1996, “Experimental Investigation of Deep Sea Interaction,” 28th Annual Offshore Technology Conference, Houston, TX, 2 , pp. 367–372.
Wu, W., Huang, S. and Barltrop, N., 1999, “Lift and Drag Forces on a Cylinder in the Wake of an Upstream Cylinder,” OMAE99, St John’s, Canada.
Wu, W., Huang, S., and Barltrop, N., 2000, “Stability Analysis of a Cylinder in the Wake of an Upstream One,” STAB2000, Tasmania, Australia, pp. 952–964.
Wu, W., Huang, S., and Barltrop, N., 2001, “Stationary and Hopf Bifurcations of Equilibrium Positions of a Cylinder Situated in Near and Far Wake Fields of an upstream cylinder,” ISOPE2001, Stavanger, Norway.
Bryndum, M., and Andersen, H., 1999, “2D Model Testing of Risers,” Report of Danish Hydraulic Institute for Norwegian Deepwater Program.

Figures

Grahic Jump Location
Effect of initial Y on solutions curves
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Effect of initial Y on solutions curves
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Critical reduced velocity vs initial spacing
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A schematic of two cylinders in cross flow
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Lift and drag force coefficients at different streamwise locations
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Equilibrium positions vs reduced velocity (initial spacing X=10 and Y=0)
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Eigen-value trajectories along the solution curve (initial spacing X=10 and Y=0)
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Equilibrium positions vs reduced velocity (initial spacing X=10 and Y=1)
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Equilibrium positions vs reduced velocity (initial spacing X=10 and Y=2.5)

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