Simulation of Unsteady Flow in Irrigation Canals Using CanalMan Model (Case Study: AMC Canal of Tabriz Plain Irrigation Network)

In this study the unsteady flow in AMC canal of irrigation network of Tabriz plain was simulated using CanalMan model. The aim was to evaluate different settings of canal control structures and turnout in passing from months with low to high water requirements and choose the most appropriate operational program among the considered options. For this purpose 10 operational options for an increasing discharge rate were considered and compared with each other for a 10-hour water delivery duration. The criteria for comparing different options included shortage of water delivery, absolute rate error of discharges and the average root-mean-square of error. The results showed that the tenth option with the least values in all three criteria, was the best option. The temporal changes of discharges for control structures and turnouts in the tenth option were presented. According to the results the disturbance travel time from canal inlet to the control structure and its damping time periods were the least in the chosen option.