Author(s): H. M. Nagy; K. Watanabe; S. A. Kantoush
Linked Author(s): Sameh A. Kantoush, Kunitoshi Watanabe
Keywords: Node-Branch model; Open channel; Numerical simulation
Abstract: Renewed interest in the role of delivery networks in farm-level water use efficiency has prompted the development of a transient hydraulic simulation model for improving the operation and design of irrigation canal networks. A numerical model is proposed for designing and improving hydraulic network systems as a part of the plan for modernization of irrigation systems in Egypt. The Nile Delta contains about 31000 km of irrigation canals and 17000 km of public drains. Automatic control structures are suggested in upstream and downstream of the Nile branches. For optimization purposes a numerical analysis is proposed for the estimation of the hydraulics properties for all of the network branches. Also, it is suggested to compute water surface profiles in steady –state gradually varied flow in tree – type open channel networks, after construction of such hydraulic structures. Canal hydraulic models can be used to understand the hydraulic behavior of large and complex network, to evaluate their performance and to improve the operation of systems. In this paper, the Node-Branch model was applied to the Mahmoudia canal and distributaries. The model helps to understand the hydraulic behavior of such large and complex network, to evaluate its performance and to improve the operation of its system. The simulated water level for the model and data were in close agreement with each other. The calibrated model was subsequently to study adequacy of water elevation for the Mahmoudia canal and distributaries.
Year: 2003