Non-linear run-up on a vertical cylinder surface-piercing cylinder
Non-linear run-up on a vertical cylinder surface-piercing cylinder
This paper presents and analyses results of experiments in which a vertical surface-piercing cylinder was driven with a horizontal motion in water initially at rest. Using a novel system of 112 water surface elevation gauges that were monitored almost simultaneously at high frequency, measurements were made of the run-up on the cylinder over a wide range of conditions. According to linear theory, the run-up is of the form . Non-linear components at temporal and spatial frequencies up to the 3rd harmonic were identified in the measurements, and in some of these, the coefficient of the leading term in a polynomial expansion in the amplitude of motion could be computed with reasonable confidence. Very successful comparisons are made with conventional linear potential theory. Some features of the free surface motion that are normally associated with higher order solutions were also computed from the first-order potential, and in some respects they were in good agreement with the measurements.
OMAE2004-51549
Chaplin, J.R.
d5ed2ba9-df16-4a19-ab9d-32da7883309f
June 2004
Chaplin, J.R.
d5ed2ba9-df16-4a19-ab9d-32da7883309f
Chaplin, J.R.
(2004)
Non-linear run-up on a vertical cylinder surface-piercing cylinder.
Proceedings of the 23rd OMAE Conference, ASME, Vancouver, Canada.
22 - 27 Jun 2004.
.
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Conference or Workshop Item
(Paper)
Abstract
This paper presents and analyses results of experiments in which a vertical surface-piercing cylinder was driven with a horizontal motion in water initially at rest. Using a novel system of 112 water surface elevation gauges that were monitored almost simultaneously at high frequency, measurements were made of the run-up on the cylinder over a wide range of conditions. According to linear theory, the run-up is of the form . Non-linear components at temporal and spatial frequencies up to the 3rd harmonic were identified in the measurements, and in some of these, the coefficient of the leading term in a polynomial expansion in the amplitude of motion could be computed with reasonable confidence. Very successful comparisons are made with conventional linear potential theory. Some features of the free surface motion that are normally associated with higher order solutions were also computed from the first-order potential, and in some respects they were in good agreement with the measurements.
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Published date: June 2004
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Proceedings of the 23rd OMAE Conference, ASME, Vancouver, Canada, 2004-06-22 - 2004-06-27
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Local EPrints ID: 53800
URI: http://eprints.soton.ac.uk/id/eprint/53800
PURE UUID: 5170bb3f-930a-479e-ab7e-32f320b76a09
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Date deposited: 30 Jul 2008
Last modified: 22 Feb 2024 02:35
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