Effect of Bed Roughness on Time-Mean Drift Induced by Waves
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 126, Issue 1
Abstract
The results are reported of an experimental study of the Eulerian time-mean drift induced by progressive water waves over rough beds. Measurements were made in a laboratory flume with a laser Doppler anemometer, and two different two-dimensional artificial bed roughnesses were investigated. The measurements show that the maximum value of the time-mean drift velocity at the bed may be increased or decreased relative to the value predicted by Longuet-Higgins' theory for smooth beds. For a certain range of parameters, near-bed mean drift in the opposite direction to that of the wave propagation was observed.
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Information & Authors
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Published In
Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 126 • Issue 1 • January 2000
Pages: 23 - 29
History
Received: Jul 21, 1998
Published online: Jan 1, 2000
Published in print: Jan 2000
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