Influence of Jet and Half Cylindrical Roughness on Hydraulic Jump Characteristics

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eslammanesh b.; DASTOURANI M.; RAMEZANI Y.

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Journal Paper

Paper Information

Journal: Iranian Journal of Irrigation and Drainage Year:2021 | Volume:15 | Issue:4 Page(s): 842-853

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Information Journal Paper

Title

Influence of Jet and Half Cylindrical Roughness on Hydraulic Jump Characteristics

Author(s)

eslammanesh b. | DASTOURANI M. | RAMEZANI Y. | Issue Writer Certificate

Keywords

Jump length

Rectangular free jet

Semi-cylindrical roughness

Abstract

The present study was conducted to simultaneously investigate the effect of Rectangular free jet and semicylindrical roughness on hydraulic jump characteristics. This study was performed inside a flume in the form of a rectangular channel 10 meters long and 30 centimeters wide. Then the jet with flows of 3/2, 2, 2/5 Liters per second with the maximum displacement effect of the beginning of the jump and the angle without changing the beginning of the jump to the end of the hydraulic jump. Take this angle as The angle was named ineffective and with the increase of the jet angle, the jump moves upwards and from one angle onwards, the jump does not move upwards. This angle was named as the maximum displacement angle. Decrease or increase, Jump length, The secondary depth of the relative energy drop and shear stress force of the bed is used. The secondary was smoothed to a jetless state. Deployment The jet with an angle of 127 (inertial angle) degree, maximum landing number (9. 64) flow and Semi-cylindrical roughness reduces to 0. 12% compared to the state without jet and smooth bed. The highest reduction in Jump length (34. 7%) occurs when the maximum flow angle from the jet and the flow rate is 3. 2 liters per second and in the conditions of the lowest landing number (6. 64) and the maximum increase in the 70 degree angle mode, the maximum jet flow And the maximum landing number in a flat bed is 8. 16%.

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APA: Copy

eslammanesh, b., DASTOURANI, M., & RAMEZANI, Y.. (2021). Influence of Jet and Half Cylindrical Roughness on Hydraulic Jump Characteristics. IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE, 15(4 ), 842-853. SID. https://sid.ir/paper/1054357/en

Vancouver: Copy

eslammanesh b., DASTOURANI M., RAMEZANI Y.. Influence of Jet and Half Cylindrical Roughness on Hydraulic Jump Characteristics. IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE[Internet]. 2021;15(4 ):842-853. Available from: https://sid.ir/paper/1054357/en

IEEE: Copy

b. eslammanesh, M. DASTOURANI, and Y. RAMEZANI, “Influence of Jet and Half Cylindrical Roughness on Hydraulic Jump Characteristics,” IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE, vol. 15, no. 4 , pp. 842–853, 2021, [Online]. Available: https://sid.ir/paper/1054357/en

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