Comparison and synthesis of 2D+T and 3D predictions of non-linear ship bow waves
Comparison and synthesis of 2D+T and 3D predictions of non-linear ship bow waves
2D+T models for the approximate solution of ship divergent waves are of interest because of the orders of magnitude speed-up that they enable. Nonlinear ship bow waves of slender high-speed vessels are investigated using 2D+T and three-dimensional Cartesian-grid simulations using the conservative Volume-of-Fluid and Boundary Data Immersion Methods to model the fluid and solid interfaces. The formulation of the unsteady two-dimensional problem in this framework is detailed and the results are shown to be quantitatively accurate only when the ship is sufficiently slender and moving at high-speed. The class of bow wave; i.e. non-breaking, spilling, or plunging: is correctly predicted by 2D+T but the location of breaking is not. These deficiencies are overcome to some extent using a Physics- Based Learning Model, which supplements the high-speed 2D+T predictions with a limited set of three-dimensional examples to produce accurate quantitative predictions.
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Weymouth, Gabriel D.
b0c85fda-dfed-44da-8cc4-9e0cc88e2ca0
June 2013
Weymouth, Gabriel D.
b0c85fda-dfed-44da-8cc4-9e0cc88e2ca0
Weymouth, Gabriel D.
(2013)
Comparison and synthesis of 2D+T and 3D predictions of non-linear ship bow waves.
International Conference on Ocean, Offshore and Arctic Engineering, Nantes, France.
09 - 14 Jun 2013.
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
2D+T models for the approximate solution of ship divergent waves are of interest because of the orders of magnitude speed-up that they enable. Nonlinear ship bow waves of slender high-speed vessels are investigated using 2D+T and three-dimensional Cartesian-grid simulations using the conservative Volume-of-Fluid and Boundary Data Immersion Methods to model the fluid and solid interfaces. The formulation of the unsteady two-dimensional problem in this framework is detailed and the results are shown to be quantitatively accurate only when the ship is sufficiently slender and moving at high-speed. The class of bow wave; i.e. non-breaking, spilling, or plunging: is correctly predicted by 2D+T but the location of breaking is not. These deficiencies are overcome to some extent using a Physics- Based Learning Model, which supplements the high-speed 2D+T predictions with a limited set of three-dimensional examples to produce accurate quantitative predictions.
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Published date: June 2013
Venue - Dates:
International Conference on Ocean, Offshore and Arctic Engineering, Nantes, France, 2013-06-09 - 2013-06-14
Organisations:
Fluid Structure Interactions Group
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Local EPrints ID: 349873
URI: http://eprints.soton.ac.uk/id/eprint/349873
PURE UUID: ac2ddf57-e9ec-4186-ab6c-df2337dddec9
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Date deposited: 20 Aug 2013 08:57
Last modified: 15 Mar 2024 03:47
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