Indian Journal of Science and Technology
Year: 2015, Volume: 8, Issue: 23, Pages: 1-6
Farhang Azarang1* , Abdol Rasoul Telvari 2 , Hossein Sedghi 1 and Mahmoud Shafai Bajestan3
1 Department of Water Science and Engineering, Science and Research Branch, Islamic Azad University, Tehran - 1477893855, Iran; [email protected], [email protected]
2 Department of Civil Engineering, Faculty of Engineering, Islamic Azad University, Ahwaz, Iran; [email protected]
3 Department of Water Science and Engineering, Shahid Chamran University, Ahwaz, Iran; [email protected]
Reservoir dams are the mostimportant hydraulic structures built on rivers and have a greatimpact on the river conditions. In this study, MIKE 11 mathematical model in Karkheh river is used in Iran. Karkheh River is one of the most important rivers of IranonwhichKarkhehReservoirDamisbuilt.MIKE11Modelisusedfor simulationofflowandsedimentinrivers.The studied river flow downstream of Karkheh Reservoir Dam and encompasses geometric, hydraulic and sediments information of Karkheh River in Abdolkhan and Hamidiyeh hydrometric stations. Manning’s roughness coefficient 0.025 was considered for Karkheh River and computational results were compared and evaluated with observational data. Cross sectional geometrical changes of Karkheh River upstream (Abdolkhan hydrometric station) were calculated and the best ways to predict changes were introduced. Engelund-Hansen and Ackers-White equations offered better predictions of changes in the Karkheh River shape. Longitudinal bed level changes of Karkheh River was estimated from upstream to downstream. Elevation changes of Karkheh river bed was obtained at the hydrometric stations of Abdolkhan (upstream) and Hamidieh (downstream) using MIKE 11 Model. According to the results ofthe study, it can be understood that Karkheh River has changed changes in its river bed shape and MIKE 11 Model can be an appropriate software for predicting sediment conditions of the rivers in Iran.
Keywords: Karkheh River, MIKE 11, Sediment Transport, Total Sediment Load
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