Computation of non-linear wave reflections and transmissions from a submerged horizontal cylinder
Computation of non-linear wave reflections and transmissions from a submerged horizontal cylinder
Nonlinear irrotational 2-D wave-body interactions are investigated using an indirect Desingularised Boundary Integral Equation Method with fully nonlinear free-surface boundary conditions. A fully implicit multi-point method is used for the time-integration, and the model is applied to the interactions of regular waves with a horizontal circular cylinder. There has been no sign of saw-tooth instabilities. The incident waves are modelled explicitly, and efficient sponge layers are used to damp out the computed scattered waves at each end of the domain. Numerical convergence and mass and energy conservation are demonstrated. Excellent agreement is observed between the present results and those from experiments, analytical solutions and other numerical models. Particular attention is given to wave reflections in deep and finite water depths, and to some unexpected wave conditions on the lee side of the cylinder.
29-37
Schønberg, T.
39033b8b-6dc6-4ea1-808e-608d84f85386
Chaplin, J.R.
d5ed2ba9-df16-4a19-ab9d-32da7883309f
March 2003
Schønberg, T.
39033b8b-6dc6-4ea1-808e-608d84f85386
Chaplin, J.R.
d5ed2ba9-df16-4a19-ab9d-32da7883309f
Schønberg, T. and Chaplin, J.R.
(2003)
Computation of non-linear wave reflections and transmissions from a submerged horizontal cylinder.
International Journal of Offshore and Polar Engineering, 13 (1), .
Abstract
Nonlinear irrotational 2-D wave-body interactions are investigated using an indirect Desingularised Boundary Integral Equation Method with fully nonlinear free-surface boundary conditions. A fully implicit multi-point method is used for the time-integration, and the model is applied to the interactions of regular waves with a horizontal circular cylinder. There has been no sign of saw-tooth instabilities. The incident waves are modelled explicitly, and efficient sponge layers are used to damp out the computed scattered waves at each end of the domain. Numerical convergence and mass and energy conservation are demonstrated. Excellent agreement is observed between the present results and those from experiments, analytical solutions and other numerical models. Particular attention is given to wave reflections in deep and finite water depths, and to some unexpected wave conditions on the lee side of the cylinder.
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Published date: March 2003
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Local EPrints ID: 53931
URI: http://eprints.soton.ac.uk/id/eprint/53931
ISSN: 1053-5381
PURE UUID: 773181d5-c810-4685-9120-caa77981dad5
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Date deposited: 22 Jul 2008
Last modified: 22 Feb 2024 02:35
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Author:
T. Schønberg
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