Investigation of the Effect of Vertical Trapezium Roughness and Adverse Slope in Relaxation Basin on Hydraulic Jump Characteristics

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banitaba s.sh; HEIDARPOUR M.; POURABDOLLAH N.

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ISSN: 2588-4824

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Journal: Irrigation and Drainage Structures Engineering Research Year:2019 | Volume:20 | Issue:76 Page(s): 95-110

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Title

Investigation of the Effect of Vertical Trapezium Roughness and Adverse Slope in Relaxation Basin on Hydraulic Jump Characteristics

Author(s)

banitaba s.sh | HEIDARPOUR M. | POURABDOLLAH N. | Issue Writer Certificate

Keywords

Energy LossQ1

Jump LengthQ1

Sequence Depth RatioQ1

Abstract

Water after passing over weirs or through gates often has a lot of energy. If the water enters to the river with the same energy, it will damage downstream structures. Creation hydraulic jump is one of the approaches to reduce this energy. Therefore, it is important to study hydraulic jump. In this study, the characteristics of hydraulic jump on bed with vertical trapezoidal roughness with heights of 0. 5, 1 and 2 cm and bed slope of 0,-1. 5 and-3% were investigated. Based on the results, sequent depth ratio, in Froude number range of 4-9, was decreased by 18. 8% more than the classic jump. The Energy Loss was increased by 9. 6% compared to the classic jump. The maximum decrease in sequence depth was related to roughness with 2 cm height and bed slope of-3%. Moreover, the rough bed with adverse slope affected the Jump Length and caused to decrease it compared to the classic jump.

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APA: Copy

banitaba, s.sh, HEIDARPOUR, M., & POURABDOLLAH, N.. (2019). Investigation of the Effect of Vertical Trapezium Roughness and Adverse Slope in Relaxation Basin on Hydraulic Jump Characteristics. IRRIGATION AND DRAINAGE STRUCTURES ENGINEERING RESEARCH , 20(76 ), 95-110. SID. https://sid.ir/paper/367722/en

Vancouver: Copy

banitaba s.sh, HEIDARPOUR M., POURABDOLLAH N.. Investigation of the Effect of Vertical Trapezium Roughness and Adverse Slope in Relaxation Basin on Hydraulic Jump Characteristics. IRRIGATION AND DRAINAGE STRUCTURES ENGINEERING RESEARCH [Internet]. 2019;20(76 ):95-110. Available from: https://sid.ir/paper/367722/en

IEEE: Copy

s.sh banitaba, M. HEIDARPOUR, and N. POURABDOLLAH, “Investigation of the Effect of Vertical Trapezium Roughness and Adverse Slope in Relaxation Basin on Hydraulic Jump Characteristics,” IRRIGATION AND DRAINAGE STRUCTURES ENGINEERING RESEARCH , vol. 20, no. 76 , pp. 95–110, 2019, [Online]. Available: https://sid.ir/paper/367722/en

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