Author(s): S. Raynal; L. Chatellier; D. Courret; M. Larinier; L. David
Linked Author(s):
Keywords: Ngled trashrack; Downstream migration; Head loss; Streamwise bars; Velocity distribution
Abstract:
Experimental results for fish-friendly trashracks placed in an open water channel are presented. Eighteen angled trashracks, with vertical bars maintained parallel to flow, were used to test different bar spacings, bar shapes and rack angles. Water depths and velocity profiles were acquired both upstream and downstream. Results reveal that the head-loss coefficient for such racks does not depend on the rack angle. A comparison with conventional angled trashracks with bars set perpendicular to the rack revealed the many advantages of streamwise bars.
Year: 2014