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Wave Kinematics on Sheared Currents

Skyner, D. J. / Easson, W. J.

Abstract Whole-field kinematic measurements are presented for steep, steady waves travelling on strongly sheared currents, concentrating on the region between trough and crest level. For slab currents, the crest kinematics and wave parameters were found to be correctly obtained by using Doppler shifting and standard wave theories. When the current was sheared, the crest kinematics were found to be well predicted by adding the results of an irrotational model to the stretched current profile, although this approach did not yield good predictions in the trough. The average shear was found to be reduced, in the presence of waves, from the undisturbed value, in agreement with the findings and predictions of other authors.

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Wave Kinematics on Sheared Currents

Skyner, D. J. / Easson, W. J.

Abstract Whole-field kinematic measurements are presented for steep, steady waves travelling on strongly sheared currents, concentrating on the region between trough and crest level. For slab currents, the crest kinematics and wave parameters were found to be correctly obtained by using Doppler shifting and standard wave theories. When the current was sheared, the crest kinematics were found to be well predicted by adding the results of an irrotational model to the stretched current profile, although this approach did not yield good predictions in the trough. The average shear was found to be reduced, in the presence of waves, from the undisturbed value, in agreement with the findings and predictions of other authors.

Wave Kinematics on Sheared Currents

Skyner, D. J. / Easson, W. J.

Abstract Whole-field kinematic measurements are presented for steep, steady waves travelling on strongly sheared currents, concentrating on the region between trough and crest level. For slab currents, the crest kinematics and wave parameters were found to be correctly obtained by using Doppler shifting and standard wave theories. When the current was sheared, the crest kinematics were found to be well predicted by adding the results of an irrotational model to the stretched current profile, although this approach did not yield good predictions in the trough. The average shear was found to be reduced, in the presence of waves, from the undisturbed value, in agreement with the findings and predictions of other authors.

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Title:

Wave Kinematics on Sheared Currents

Contributors:

Skyner, D. J. (author) / Easson, W. J. (author)

Published in:

Wave Kinematics and Environmental Forces ; 101-113

Advances in Underwater Technology, Ocean Science and Offshore Engineering ; 29

Publication date:

1993-01-01

Size:

13 pages

ISBN:

978-94-017-3663-3 , 978-90-481-4250-7

ISSN:

DOI:

https://doi.org/10.1007/978-94-017-3663-3_6

Type of media:

Article/Chapter (Book)

Type of material:

Electronic Resource

Language:

English

Keywords:

Horizontal Velocity , Current Profile , Wave Kinematics , Shear Current , Wave Flume Engineering , Offshore Engineering , Vibration, Dynamical Systems, Control , Mathematical Modeling and Industrial Mathematics

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