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Effect of vortex shedding on the coupled roll response of bodies in waves

Published online by Cambridge University Press:  21 April 2006

M. J. Downie ,
P. W. Bearman  and
J. M. R. Graham
M. J. Downie
Affiliation:
Department of Naval Architecture and Shipbuilding, The University, Newcastle upon Tyne, NE1 7RU, UK
P. W. Bearman
Affiliation:
Department of Aeronautics, Imperial College, London, SW7 2BY, UK
J. M. R. Graham
Affiliation:
Department of Aeronautics, Imperial College, London, SW7 2BY, UK
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Abstract

Hydrodynamic damping of floating bodies is due mainly to wave radiation and viscous damping. The latter is particularly important in controlling those responses of the body for which the wave damping is small. The roll response of ship hulls near resonance in beam seas is an example of this. The present paper applies a discrete vortex method as a local solution to model vortex shedding from the bilges of a barge hull of rectangular cross-section and hence provides an analytic method for predicting its coupled motions in three degrees of freedom, including the effects of the main component of viscous damping. The method provides a frequency-domain solution satisfying the full linearized boundary conditions on the free surface.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 189 , April 1988 , pp. 243 - 261
Copyright
© 1988 Cambridge University Press

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References

Bearman, P. W., Downie, M. J. & Graham, J. M. R. 1982 Calculation method for separated flows with applications to oscillatory flow past cylinders and the roll damping of barges. Proc. 14th Symp. Naval Hydrodynamics, Ann Arbor, Michigan, USA.
Bearman, P. W., Downie, M. J., Graham, J. M. R. & Obasaju, E. D. 1985 Forces on cylinders in viscous oscillatory flow at low Keulegan-Carpenter numbers. J. Fluid Mech. 154, 337.Google Scholar
Bearman, P. W., Graham, J. M. R., Naylor, P. & Obasaju, E. D. 1981 The role of vortices in oscillatory flow about bluff cylinders. Intl Symp. Hyd. in Ocean Engng. Norwegian Inst. Tech.
Brown, C. E. & Michael, W. H. 1955 The effect of leading edge separation on the lift of a delta wing. J. Aero. Sci. 21, 690.Google Scholar
Brown, D. T., Taylor, R. Eatock & Patel, M. H. 1983 Barge motions in random seas-a comparison of theory and experiment. J. Fluid Mech. 129, 385.Google Scholar
Brown, D. T. & Patel, M. H. 1981 The calculation of vorticity effects on the motion response of a flat bottomed barge to waves. Proc. Intl Symp. Hyd. in Ocean Engng. Norwegian Inst. Tech.
Denise, J.-P. F. 1982 On the roll motion of barges. RINA Paper W10.
Faltinsen, O., Aarsnes, J. V. & Pettersen, B. 1985 Application of vortex tracking method to current forces on ships. Proc. Symp. on Separated Flows about Marine Structures, Trondheim, Norway.
Faltinsen, O. & Sortland, B. 1987 Slow drift eddy making damping of a ship. Appl. Ocean Res. 9, 37.Google Scholar
Fink, P. T. & Soh, W. K. 1974 Calculation of vortex sheets in unsteady flow and application in ship hydrodynamics. Proc 10th Symp. Naval Hydrodynamics, Cambridge, Massachusetts.
Graham, J. M. R. 1980 The forces on sharp-edged cylinders in oscillatory flow at low Keulegan-Carpenter numbers. J. Fluid Mech. 97, 331.Google Scholar
Graham, J. M. R. 1985 Numerical simulation of steady and unsteady flow about sharp edged bodies. Proc. Symp. on Separated Flows about Marine Structures, Trondheim, Norway.
Himeno, Y. 1981 Prediction of ship roll damping - state of the art. Dept Nav. Arch. and Mar. Engng, Univ. of Michigan, Rep. 239.
Ikeda, Y. & Himeno, Y. 1981 Calculation of vortex shedding flow around oscillating circular and Lewis form cylinders. 3rd Intl Conf. Num. Ship Hyd. Paris.
Ikeda, Y., Himeno, Y. & Tanaka, N. 1978 A prediction method for ship roll damping. Dept. Nav. Arch. Univ. of Osaka Prefecture, Rep. 00405.
John, F. 1980 On the motion of floating bodies, part II. Commun. Pure Appl. Maths 3, 45.Google Scholar
Kaplan, P., Jiang, C.-W. & Bentson, J. 1982 Hydrodynamic analysis of barge platform systems in waves. RINA Spring Meeting, Paper no. 8.
Kato, H. 1958 On the frictional resistance to the rolling of ships. J. Soc. Nav. Arch. Japan 102, 115.Google Scholar
Newman, J. N. 1977 Marine Hydrodynamics. MIT Press.
Patel, M. H. & Brown, D. T. 1986 On predictions of resonant roll motions for flat-bottomed barges. RINA Supplementary Papers, vol. 128.
Robinson, R. W. & Stoddart, A. W. 1986 An engineering assessment of the role of non-linearities in transportation barge roll response. RINA Spring Meeting, Paper no. 8.
Salvesen, N., Tuck, E. O. & Faltinsen, O. 1970 Ship motions and sea loads. Trans. SNAME 78, 421.Google Scholar
Schmitke, R. T. 1978 Ship sway, roll and yaw motions in oblique seas. Trans. SNAME 86, 26.Google Scholar
Singh, S. 1979 Forces on bodies in oscillatory flow. Ph.D. thesis, University of London.
Tanaka, N. 1961 A study on bilge keels. (Part 4. On the eddy making resistance to the rolling of a ship's hull). J. Soc. Nav. Arch. Japan 109, 205.Google Scholar
Ueno, K. 1949 Influence of the surface tension of the surrounding water upon the free rolling of model ships. Report of Res. Inst. for Appl. Mech. Kyushu University.
Vugts, J. H. 1971 The hydrodynamic forces and ship motions in oblique waves. Neth. Ship Res. Centre TNO. Rep. 150S.