Using the Weir Back as an Energy Dissipator

by Abdelkawi Khalifa, United Arab Emirates Univ, Al-Ain, United Arab Emirates,

Document Type: Proceeding Paper

Part of: Hydraulic Engineering


The effect of weir back in energy dissipation is investigated experimentally and theoretically. The study includes four different shapes of weir back. The boundary friction force and the energy loss are predicted for each shape. A set of dimensionless curves was developed for the friction force and energy loss through the weirs. The coefficient of drag is predicted for the four types of weirs. The optimum weir shape for energy dissipation is developed.

Subject Headings: Weirs | Energy dissipation | Friction | Hydraulic structures | Energy loss | Drop structures | Domain boundary

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