Experimental Study of Discharge Doefficient of the Groove upstream of Concrete-Face Rockfill Dam (using Hydraulic Models)

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Rahiminejad Zahra; MUSAVI JAHROMI SEYED HABIB; KHOSROJERDI AMIR; Hassanpour Darvishi Hossein; MOHAMMAD VALI SAMANI JAMAL

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Journal: JOURNAL OF WATER AND SOIL RESOURCES CONSERVATION Year:2021 | Volume:10 | Issue:4 Page(s): -

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Title

Experimental Study of Discharge Doefficient of the Groove upstream of Concrete-Face Rockfill Dam (using Hydraulic Models)

Author(s)

Keywords

concrete-face rockfill dam (CFRD)

discharge coefficient of the groove

orifice discharge rate

Rectangular groove

Abstract

Considering the role of heterogeneous dams in flood control and also water storage, it is very important to consider the flow hydraulic in them. On the other hand, proper design of rockfill dams requires accurate study of flow behavior in these dams. In this regard, by studying the concrete-face rockfill dam (CFRD) in the present study, by creating different cracks on the concrete face of the dam in the laboratory model, the water infiltration behavior inside the dam body was investigated. Transverse cracks of concrete slab on concrete-face rockfill dam (CFRD) and water flow and how to control it in rockfill dams is one of the most important issues considered by experts in the design of dams. Determining the discharge coefficient of the groove to estimate the flow rate is important and unavoidable. The purpose of this study is to calculate the discharge coefficient of a Rectangular groove located in the concrete surface upstream of the concrete-face rockfill dam (CFRD) in both submerged and free conditions. Variable geometric parameters in this study include the height of the groove from the bed, the angle of the groove located upstream of the horizon and, the variable hydraulic parameters include the height of the water head upstream of the rockfill dam. A total of 50 different experiments were performed and entered into the calculations. Finally, two equations were developed using dimensional analysis and nonlinear equation analysis, in order to predict the discharge coefficient of the upstream groove of a concrete-face rockfill dam in both free and submerged states. The developed equations are in good agreement (correlation coefficient of 0. 988 for free flow and 0. 984 for submerged flow) with experimental results. There is also a good agreement between the observed and computational flow using the predicted equation (0. 992 for free flow and 0. 989 for submerged flow).

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APA: Copy

Rahiminejad, Zahra, MUSAVI JAHROMI, SEYED HABIB, KHOSROJERDI, AMIR, Hassanpour Darvishi, Hossein, & MOHAMMAD VALI SAMANI, JAMAL. (2021). Experimental Study of Discharge Doefficient of the Groove upstream of Concrete-Face Rockfill Dam (using Hydraulic Models). JOURNAL OF WATER AND SOIL RESOURCES CONSERVATION, 10(4 ), -. SID. https://sid.ir/paper/681759/en

Vancouver: Copy

Rahiminejad Zahra, MUSAVI JAHROMI SEYED HABIB, KHOSROJERDI AMIR, Hassanpour Darvishi Hossein, MOHAMMAD VALI SAMANI JAMAL. Experimental Study of Discharge Doefficient of the Groove upstream of Concrete-Face Rockfill Dam (using Hydraulic Models). JOURNAL OF WATER AND SOIL RESOURCES CONSERVATION[Internet]. 2021;10(4 ):-. Available from: https://sid.ir/paper/681759/en

IEEE: Copy

Zahra Rahiminejad, SEYED HABIB MUSAVI JAHROMI, AMIR KHOSROJERDI, Hossein Hassanpour Darvishi, and JAMAL MOHAMMAD VALI SAMANI, “Experimental Study of Discharge Doefficient of the Groove upstream of Concrete-Face Rockfill Dam (using Hydraulic Models),” JOURNAL OF WATER AND SOIL RESOURCES CONSERVATION, vol. 10, no. 4 , pp. –, 2021, [Online]. Available: https://sid.ir/paper/681759/en

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