Comparison of Energy Dissipation by Double Horizontal Screen and Stilling Basins at Vertical Drop Downstream

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DANESHFARAZ RASOUL; Majedi Asl Mahdi; RAZMI SHABAN

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Journal: Iranian Journal of Soil and Water Research Year:2020 | Volume:51 | Issue:7 Page(s): 1681-1690

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Title

Comparison of Energy Dissipation by Double Horizontal Screen and Stilling Basins at Vertical Drop Downstream

Author(s)

DANESHFARAZ RASOUL | Majedi Asl Mahdi | RAZMI SHABAN | Issue Writer Certificate

Keywords

Residual EnergyQ1

Double Horizontal ScreensQ1

Stilling BasinQ2

Vertical DropQ1

Drop LengthQ1

Abstract

The aim of this study was to evaluate and compare the Double Horizontal Screens with four types of Stilling Basin (I, II, III and IV) at Vertical Drop downstream in terms of energy dissipation. A total of 140 different experiments were performed on a Vertical Drop equipped with Double Horizontal Screens (with 40 and 50% porosity) at relative spaces of 0. 25, 0. 33 and 0. 5 between the screens, and two drop height of 20 and 25 cm. The results showed that the relative spacing and porosity of the double horizontal screen do not have a significant effect on the Residual Energy and the relative depth of downstream, however, the length of drop Stilling Basin is decreased with increasing the relative spacing and porosity of screen. In compared to the Stilling Basins, the use of Double Horizontal Screens reduced the length of drop Stilling Basin and the Residual Energy and relative depth of downstream is reduced by more than 35 and 49%, respectively.

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APA: Copy

DANESHFARAZ, RASOUL, Majedi Asl, Mahdi, & RAZMI, SHABAN. (2020). Comparison of Energy Dissipation by Double Horizontal Screen and Stilling Basins at Vertical Drop Downstream. IRANIAN JOURNAL OF SOIL AND WATER RESEARCH, 51(7 ), 1681-1690. SID. https://sid.ir/paper/380193/en

Vancouver: Copy

DANESHFARAZ RASOUL, Majedi Asl Mahdi, RAZMI SHABAN. Comparison of Energy Dissipation by Double Horizontal Screen and Stilling Basins at Vertical Drop Downstream. IRANIAN JOURNAL OF SOIL AND WATER RESEARCH[Internet]. 2020;51(7 ):1681-1690. Available from: https://sid.ir/paper/380193/en

IEEE: Copy

RASOUL DANESHFARAZ, Mahdi Majedi Asl, and SHABAN RAZMI, “Comparison of Energy Dissipation by Double Horizontal Screen and Stilling Basins at Vertical Drop Downstream,” IRANIAN JOURNAL OF SOIL AND WATER RESEARCH, vol. 51, no. 7 , pp. 1681–1690, 2020, [Online]. Available: https://sid.ir/paper/380193/en

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