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Experimental characterization of the flow across fish-friendly angled trashrack models

Chatellier, Ludovic and Wang, Ruey-Wen and David, Laurent and Courret, Dominique and Larinier, Michel Experimental characterization of the flow across fish-friendly angled trashrack models. (2011) In: 34th IAHR World Congress, 26 June 2011 - 1 July 2011 (Brisbane, Australia).

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An experimental study of open channels flows across conventional and fish-friendly trashrack models in a towing tank is reported. Experiments are conducted for two kinds of trashracks, respectively comprised of fixed-width rectangular and profiled bars. Various trashrack orientation angles, bar-to-bar spacings and incoming flow velocities are investigated, while detailed Particle Image Velocimetry measurements are carried-out upstream and downstream of the trashracks in the streamwise-spanwise plane, along with pressure recordings. A stitching technique applied to the quasi time-resolved PIV snapshots allows a precise reconstruction of the flows, leading to the investigation of extended datasets. The flow analysis reveals significant effects of the various trashrack configurations on the topology of the flow, with a strong influence on the mixing layer and on the extent of the downstream recirculation region.

Item Type:Conference or Workshop Item (Speech)
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > ISAE-ENSMA Ecole Nationale Supérieure de Mécanique et d'Aérotechnique (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Université de Poitiers (FRANCE)
Other partners > Office national de l'eau et des milieux aquatiques - ONEMA (FRANCE)
Laboratory name:
Deposited On:02 Apr 2014 08:03

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