شبيه سازي حركت آب و نمك ها در سامانه زهكشي زيرزميني با استفاده از روش تحليل پويايي سيستم

Simulation of water and salt inflow in subsurface Drainage Systems, using system dynamics

The quantity and quality of drain water should be determined to correct management on it. Therefore in this paper, the system dynamics technique was used to simulate the performance of a drainage system in unsteady state condition The system dynamics technique is one of the object oriented approach that studies and manages complex feedback systems. Its merit includes friendly and easily development and improvement of the model. Itʹs also used as a decision tool for engineering problems. The model is capable of predicting many hydrological parameters such as water table fluctuation, drainage discharge, drain water salinity and ground water salinity. All above parameters were investigated theoretically and their trends were found to be legible. The model was validated using observed experimental field data collected from Amirkabir unit in sugarcane development plan located at khozestan, Iran. The results indicated the good agreement between the observed and simulated parameters.