Effect of spur dike as a protective structure on riverbend using a mathematical model CCHE2D (Case Study: Hormozgan Minab River)

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NOHEGAR AHMAD; Jafarpoor Atefeh; ROSTAMI MOHAMMAD; Avand Mohammad taghi

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Journal: IRANIAN JOURNAL OF ECOHYDROLOGY Year:2017 | Volume:4 | Issue:2 Page(s): 615-626

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Title

Effect of spur dike as a protective structure on riverbend using a mathematical model CCHE2D (Case Study: Hormozgan Minab River)

Author(s)

NOHEGAR AHMAD | Jafarpoor Atefeh | ROSTAMI MOHAMMAD | Avand Mohammad taghi | Issue Writer Certificate

Keywords

Spur dikeQ2

Minab RiverQ2

Numerical simulationQ2

CCHE2D modelQ2

Abstract

Instability of river bank leads to lots of problems in short and long terms. Gradual destruction of river bank, consequently, gives rise to risk for structures and lands along the river coast. It can cause the field of sedimentation, reducing local angle of meanders and finally, making a new path for river. The current study presents a numerical modeling of the effect of successive Spur dike on flow and sediment patterns and provides protection for the bank of Minab River using two-dimensional model CCHE2D. The parameters used for calibration include water depth and flow rate, measured in three river banks. At this stage, optimal networking of different models were used, moreover, Network 50*500 was chosen because it was closer to the results of field measurements. The results of this study show that geometry of river flow and sediment regulated and guided the breakwater in the Thalweg river velocity and shear stress influences, so that a Spur dike can decrease velocity by 66 percent, leading to deviation of maximum velocity lines from the banks and river bank zone, obviating 20 cm erosion and substituting 5 cm sediment on bank zone and finally it will establish and protect river banks.

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APA: Copy

NOHEGAR, AHMAD, Jafarpoor, Atefeh, ROSTAMI, MOHAMMAD, & Avand, Mohammad taghi. (2017). Effect of spur dike as a protective structure on riverbend using a mathematical model CCHE2D (Case Study: Hormozgan Minab River). IRANIAN JOURNAL OF ECOHYDROLOGY, 4(2 ), 615-626. SID. https://sid.ir/paper/254071/en

Vancouver: Copy

NOHEGAR AHMAD, Jafarpoor Atefeh, ROSTAMI MOHAMMAD, Avand Mohammad taghi. Effect of spur dike as a protective structure on riverbend using a mathematical model CCHE2D (Case Study: Hormozgan Minab River). IRANIAN JOURNAL OF ECOHYDROLOGY[Internet]. 2017;4(2 ):615-626. Available from: https://sid.ir/paper/254071/en

IEEE: Copy

AHMAD NOHEGAR, Atefeh Jafarpoor, MOHAMMAD ROSTAMI, and Mohammad taghi Avand, “Effect of spur dike as a protective structure on riverbend using a mathematical model CCHE2D (Case Study: Hormozgan Minab River),” IRANIAN JOURNAL OF ECOHYDROLOGY, vol. 4, no. 2 , pp. 615–626, 2017, [Online]. Available: https://sid.ir/paper/254071/en

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