Simulating sedimentation status of Ebrou river of Ekbatan dam in Hamedan Using GSTARS 2.1 mathematical model

Document Type : پژوهشی

Author

Associate Professor in Geomorphology, University of Malayer,Iran

Abstract

The purpose of this study is to simulate and sedimentation status of Ebro River of Ekbatan Dam in Hamedan using GSTARS 2.1 mathematical model.For this purpose, they measure the hydrodynamic part of the sediment from the water and hydrometry of the measuring station Ebro and data on water level cultivar changes in 2006 and cross-sectional geometric data collected in 2006 and 2019 and sediment transport equations in 13-year production period have been used.Studies show that the cross section of the river is changing from V-shaped to U-shaped from 2005 to 2019..Examination of sedimentation rate during 13 years (2006-2019) shows that the cross-sectional level of the river is about 24.6 cm and using Wyang's sedimentary relationships changed by 22.8 and 20.2 cm, respectively, which indicates a good agreement of the model in the evaluation and Simulation of cross-sectional change due to erosion and sedimentation.Studies show that the values of slope and velocity in the middle of the study area are less than the beginning and more than the end, so the amount of sediment in the middle is more than the beginning and less than downstream of the region.It is recommended to use FLUVIAL 12 and HEC-RAS methods to select and apply the most practical method.

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References

5-References
Bayazidi, M., & Karami, N. (2017). Prediction of sedimentation trend in Qarasu river using GSTARS 3 model, Journal of Environment and Water Engineering, 3, (1), 66-80.
Zahiriy, A. R., Qoli Nejad, J., & Dehghani, A. (2018). Calculation of transverse distribution of river sediments using a quasi-two-dimensional mathematical model (Case study: Qarasu River), Journal of Water Resources Engineering, 11(­38), 83-93(In Persian).
Ouda, M. (2019). Multiphase Modelling of Sediment Transport and Bed Erosion for the Study of Coastal Morphodynamics. (KU Leuven, Technology Campus Brugge, Belgium) October 2019.
Lai, Y. G., & Wu, K. (2019). A Three-Dimensional Flow and Sediment Transport Model for Free-Surface Open Channel Flows on Unstructured Flexible Meshes. Fluids, 4(1), 18-23.

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History

  • Receive Date: 22 April 2021
  • Revise Date: 25 August 2021
  • Accept Date: 06 September 2021

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