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You are here : eLibrary : IAHR World Congress Proceedings : 34th Congress - Brisbane (2011) : THEME 5: Environmental Hydraulics and Hydrology : Experimental characterization of the flow across fish-friendly angled trashrack models
Experimental characterization of the flow across fish-friendly angled trashrack models
Author : L. Chatellier1, R.-W. Wang1, L. David1, D. Courret2, M. Larinier2
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.
File Size : 1,462,859 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 34th Congress - Brisbane (2011)
Article : THEME 5: Environmental Hydraulics and Hydrology
Date Published : 01/07/2011
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