Conditional Short-crested second order waves in shallow water and with superimposed current
For bottom-supported offshore structures like oil drilling rigs and oil production platforms, a deterministic design wave approach is often applied using a regular non-linear Stokes' wave. Thereby, the procedure accounts for non-linear effects in the wave loading but the randomness of the ocean...
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International Conference on Offshore Mechanics and Arctic Engineering
2004
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ftdtupubl:oai:pure.atira.dk:publications/0c17b262-1073-47f8-817a-e4eebbc515d2 2023-05-15T14:21:00+02:00 Conditional Short-crested second order waves in shallow water and with superimposed current Jensen, Jørgen Juncher 2004 https://orbit.dtu.dk/en/publications/0c17b262-1073-47f8-817a-e4eebbc515d2 eng eng International Conference on Offshore Mechanics and Arctic Engineering info:eu-repo/semantics/restrictedAccess Jensen , J J 2004 , Conditional Short-crested second order waves in shallow water and with superimposed current . in Proceedings of 23st International Conference on Offshore Mechanics and Arctic Engineering . International Conference on Offshore Mechanics and Arctic Engineering , International Conference on Offshore Mechanics and Arctic Engineering , Vancouver , British Columbia , Canada , 20/06/2004 . contributionToPeriodical 2004 ftdtupubl 2023-03-15T23:52:59Z For bottom-supported offshore structures like oil drilling rigs and oil production platforms, a deterministic design wave approach is often applied using a regular non-linear Stokes' wave. Thereby, the procedure accounts for non-linear effects in the wave loading but the randomness of the ocean waves is poorly represented, as the shape of the wave spectrum does not enter the wave kinematics. To overcome this problem and still keep the simplicity of a deterministic approach, Tromans, Anaturk and Hagemeijer (1991) suggested the use of a deterministic wave, defined as the expected linear Airy wave, given the value of the wave crest at a specific point in time or space. In the present paper a derivation of the expected second order short-crested wave riding on a uniform current is given. The analysis is based on the second order Sharma and Dean shallow water wave theory and the direction of the main wind direction can make any direction with the current. Numerical results showing the importance of the water depth, the directional spreading and the current on the conditional mean wave profile and the associated wave kinematics are presented. A discussion of the use of the conditional wave approach as design waves is given. Other Non-Article Part of Journal/Newspaper Arctic Technical University of Denmark: DTU Orbit |
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Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
description |
For bottom-supported offshore structures like oil drilling rigs and oil production platforms, a deterministic design wave approach is often applied using a regular non-linear Stokes' wave. Thereby, the procedure accounts for non-linear effects in the wave loading but the randomness of the ocean waves is poorly represented, as the shape of the wave spectrum does not enter the wave kinematics. To overcome this problem and still keep the simplicity of a deterministic approach, Tromans, Anaturk and Hagemeijer (1991) suggested the use of a deterministic wave, defined as the expected linear Airy wave, given the value of the wave crest at a specific point in time or space. In the present paper a derivation of the expected second order short-crested wave riding on a uniform current is given. The analysis is based on the second order Sharma and Dean shallow water wave theory and the direction of the main wind direction can make any direction with the current. Numerical results showing the importance of the water depth, the directional spreading and the current on the conditional mean wave profile and the associated wave kinematics are presented. A discussion of the use of the conditional wave approach as design waves is given. |
format |
Other Non-Article Part of Journal/Newspaper |
author |
Jensen, Jørgen Juncher |
spellingShingle |
Jensen, Jørgen Juncher Conditional Short-crested second order waves in shallow water and with superimposed current |
author_facet |
Jensen, Jørgen Juncher |
author_sort |
Jensen, Jørgen Juncher |
title |
Conditional Short-crested second order waves in shallow water and with superimposed current |
title_short |
Conditional Short-crested second order waves in shallow water and with superimposed current |
title_full |
Conditional Short-crested second order waves in shallow water and with superimposed current |
title_fullStr |
Conditional Short-crested second order waves in shallow water and with superimposed current |
title_full_unstemmed |
Conditional Short-crested second order waves in shallow water and with superimposed current |
title_sort |
conditional short-crested second order waves in shallow water and with superimposed current |
publisher |
International Conference on Offshore Mechanics and Arctic Engineering |
publishDate |
2004 |
url |
https://orbit.dtu.dk/en/publications/0c17b262-1073-47f8-817a-e4eebbc515d2 |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Jensen , J J 2004 , Conditional Short-crested second order waves in shallow water and with superimposed current . in Proceedings of 23st International Conference on Offshore Mechanics and Arctic Engineering . International Conference on Offshore Mechanics and Arctic Engineering , International Conference on Offshore Mechanics and Arctic Engineering , Vancouver , British Columbia , Canada , 20/06/2004 . |
op_rights |
info:eu-repo/semantics/restrictedAccess |
_version_ |
1766293570288877568 |