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An experimental study on fish-friendly trashracks – Part 1. Inclined trashracks

Raynal, Sylvain and Courret, Dominique and Chatellier, Ludovic and Larinier, Michel and David, Laurent An experimental study on fish-friendly trashracks – Part 1. Inclined trashracks. (2013) Journal of Hydraulic Research, 51 (1). 56-66. ISSN 0022-1686

(Document in English)

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Official URL: http://dx.doi.org/10.1080/00221686.2012.753646


Experimental results are presented for trashracks placed in an open water channel with different bar shapes, spaces between bars and screen inclination angles. The numerous configurations provided results on head losses and on changes in velocity along the rack for a large range of situations, including fish-friendly trashracks. A new head-loss equation is proposed that takes into account the effect of the different tested parameters and demonstrates the need to separate the effect of the trashrack bars, which is directly related to the inclination of the trashrack, from the effect of the transversal elements such as spacer rows whose effect on the flow is not altered by rack inclination. Velocity measurements also adduce rules for efficient water intakes complying with fish-friendly criteria.

Item Type:Article
Additional Information:Thanks to Taylor & Francis editor. The definitive version is available athttp://www.tandfonline.com/doi/abs/10.1080/00221686.2012.753646#.UzWJns5y2FE
HAL Id:hal-00967468
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
French research institutions > Institut national de Recherche en Sciences et Technologies pour l'Environnement et l'Agriculture - IRSTEA (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Office national de l'eau et des milieux aquatiques - ONEMA (FRANCE)
Laboratory name:
Deposited On:28 Mar 2014 15:19

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