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Communication Dans Un Congrès Année : 2011

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

Résumé

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.
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Dates et versions

hal-04087257 , version 1 (03-05-2023)

Identifiants

  • HAL Id : hal-04087257 , version 1
  • OATAO : 11258

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Ludovic Chatellier, Ruey-Wen Wang, Laurent David, Dominique Courret, Michel Larinier. Experimental characterization of the flow across fish-friendly angled trashrack models. 34th IAHR World Congress, Jun 2011, Brisbane, Australia. pp.0. ⟨hal-04087257⟩
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