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Space-Time Resolved Experiments for Water Waves

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Chekroun M., Maurel A., Lagubeau G., Pagneux V., Cobelli P.
Acta Physica Polonica A
|
2011
|
vol. 120
|
issue 6A
A-142-A-148
EN
An overview of recent works on water wave propagation using a full time-space resolved method is given. The experimental method allows us to precisely measure the surface elevation field with spatial and temporal resolutions given by the pixel size and frequency acquisition of a high speed camera. Two typical problems are regarded: (i) the propagation of water waves through surface piercing obstacles with trapped modes or directional emission, a problem of interest notably for its practical applications to the protection of floating structures and to the canalization of the water wave energy, (ii) a study of water wave turbulence is also reported, exhibiting the interest to measure the joint space-time power spectrum to study which hypothesis of weak turbulence theory survives in laboratory experiments.
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