Chapter
Dec 31, 2015
Near-Surface Orbital Velocities in Irregular Waves
Authors: K.-F. Daemrich and A. GötschenbergAuthor Affiliations
Publication: Coastal Engineering 1986
Abstract
The paper deals with measurements of horizontal orbital velocities near the surface of mechanically generated waves in a wave flume.
Due to the characteristics of most velocity probes, it is difficult or impossible to measure with a fixed probe in the area above the lowest trough. As the probe is not submerged continuously, failures or uncertainties in the measurements may occur.
To overcome these limitations, a movable frame for the velocity probe was designed, which can be moved vertically up and down with the surface elevation by a disc rotor servo motor, controlled by a wave gauge. By that continuously velocities up to 3 cm below the surface could be measured.
Theoretical velocities have been calculated for comparison with different simulation methods for irregular waves, based on linear wave theory.
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Published In
Coastal Engineering 1986
Pages: 97 - 108
Copyright
© 1987 American Society of Civil Engineers.
History
Published online: Dec 31, 2015
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Authors
Affiliations
K.-F. Daemrich
Dr.-Ing., Senior Research Engineer
A. Götschenberg
Dipl.-Ing., Research Engineer both Franzius-Institut, University of Hannover, FRGermany
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