Engineering
6 years ago

New labyrinth weirs reduce water levels and increase energy dissipation.

Flow Measurement and Instrumentation
Minimizing the hydraulic side effects of weirs construction by using labyrinth weirs
Osama K. Saleh, E.A. Elnikhely, Ismail Fathy

Paper Summary

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Weirs are important for irrigation projects, but their construction can have negative effects on water flow. By testing different shapes and dimensions of weirs, researchers found that labyrinth weirs with a crest angle of 60° are the best. These weirs reduce water levels and energy loss, while increasing discharge efficiency. Compared to linear weirs, labyrinth weirs have lower operating heads and longer crest lengths. The findings were confirmed using computer simulations.