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| Titel |
Wave-current interaction, experiments with controlled uniform shear |
| VerfasserIn |
Bruno Simon, Julien Touboul, Vincent Rey |
| Konferenz |
EGU General Assembly 2016
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 18 (2016) |
| Datensatznummer |
250128675
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| Publikation (Nr.) |
 EGU/EGU2016-8683.pdf |
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| Zusammenfassung |
| Vertically varying currents have a non negligible impact on the propagation of waves. Even
though the analytical aspect of the interaction between wave and sheared current is being an
active subject of research, experimental data remain rare. Here, the effects of a uniformly
shear were investigated in the 10 m long by 0.3 m wide wave flume of the Université de
Toulon, France. The main difficulty of the study was to produce several conditions of current
with constant shear (du∕dz = cst) that would persist along the channel. This was achieved
by using curved wire screens upstream the channel (Dunn and Tavoularis, 2007). The
geometry and properties of the screens were adjusted to deflect the streamline towards the
channel bed or the free surface in order to change the velocity profile. The study focused
on regular wave propagating against the current for several wave frequencies and
amplitudes. Properties of the free surface and flow velocity are discussed for current with
positive and negative shear in order to quantify the influence of the current on the
waves.
ACKNOWLEDGEMENTS
The DGA (Direction Générale de l’Armement, France) is acknowledged for its financial
support through the ANR grant N∘ ANR-13-ASTR-0007. |
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