Pressure and Set Down for Higher‐Order Stokes Waves on Current
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 119, Issue 5
Abstract
The Bernoulli equation for higher‐order Stokes waves on a steady current over a horizontal, impermeable bed was analyzed, and an ambiguity was detected in the determination of the wave‐induced pressure at even‐order theories. This leads to the introduction of a new (reduced) Bernoulli constant. A simple relation between this quantity and the current‐wave set down is presented, and the set down correct to the fourth order in wave steepness is calculated. The finding of the fourth‐order current‐wave set down is a necessary step to allow calculation of the wave height for fourth‐order shoaling in the presence of a current. Finally, the difference between a wave quantity belonging to nth‐order theory and being correct to the nth order is discussed, and guidelines are offered for the determination of the former and the corresponding dispersion relation.
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References
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Information
Published In
Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 119 • Issue 5 • September 1993
Pages: 496 - 504
Copyright
Copyright © 1993 American Society of Civil Engineers.
History
Received: Feb 24, 1992
Published online: Sep 1, 1993
Published in print: Sep 1993
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