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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/734

Title: Video measurements of fluid velocities and water levels in breaking waves
Authors: Govender, K
Alport, MJ
Mocke, G
Michallet, H
Keywords: LDA
Laser doppler anemometry
Velocity flow
Breaking water waves
Image velocimetry
Video measurements
Water levels
Issue Date: 2002
Publisher: Royal Swedish Academy of Sciences
Citation: Govender, K et al. 2002. Video measurements of fluid velocities and water levels in breaking waves. Physica Scripta, Vol. T97, pp 152-159
Abstract: The cost-effective measurement of the velocity flow fields in breaking water waves, using particle and correlation image velocimetry, is described. The fluid velocities are estimated by tracking the motion of neutrally buoyant particles and aeration structures. Results of the phase-ensemble-averaged velocity flow fields, time-averaged horizontal velocities and turbulence results are presented for laboratory waves breaking on a beach of slope 1:20 and for waves breaking over a submerged bar. A comparison of measurements using video and LDA techniques is also presented. The measurement of water levels and wave roller structures is accomplished by generating a video time series of the wave at a given horizontal position, from which the water levels and rollers structures are extracted.
Description: Copyright: 2002 Royal Swedish Academy of Sciences
URI: http://hdl.handle.net/10204/734
ISSN: 0031-8949
Appears in Collections:Coastal and marine systems
General science, engineering & technology

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