Effect of Hydraulic Jump Submergence on the Bed Pressure Fluctuations of the USBR Type II Stilling Basin

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MOUSAVI S.N.; FARSADIZADEH D.; SALMASI F.; HOSSEINZADEH DALIR A.

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Paper Information

Journal: WATER AND SOIL SCIENCE (AGRICULTURAL SCIENCE) Year:2020 | Volume:30 | Issue:2 Page(s): 15-29

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Title

Effect of Hydraulic Jump Submergence on the Bed Pressure Fluctuations of the USBR Type II Stilling Basin

Author(s)

MOUSAVI S.N. | FARSADIZADEH D. | SALMASI F. | HOSSEINZADEH DALIR A. | Issue Writer Certificate

Keywords

CʹP coefficientQ1

Pressure transducerQ1

Stilling basinQ3

Submerged hydraulic jumpQ1

Submergence factorQ1

Abstract

In the present study, the flow pressure fluctuations have been measured on the bed of the USBR Type II Stilling basin downstream of an Ogee spillway using Pressure transducers. The experiments were carried out in a laboratory flume under different flow conditions. In addition, the pressure field in Submerged hydraulic jumps was investigated to help better understanding the energy dissipation process and optimum designing the Stilling basins. Using the dimensionless parameters, the submergence effect on the longitudinal distribution of the mean pressure and the pressure fluctuations intensity were evaluated. Pressure data acquisition was conducted for different incident Froude numbers (Fr1), ranged from 6. 4 to 8. 3, and Submergence factors (S) in the range of 1 to 1. 4. Based on the dimensional analysis, the values of the intensity coefficient of pressure fluctuations (Cʹ P) were a function of parameters of Fr1, S and the relative distance from the beginning of the basin (X/Y1). The results showed that the maximum values of Cʹ P coefficient for the Type II Stilling basin decreased around 30% compared to the smooth basins. The mean values of Cʹ P in submerged jumps decreased around 25% compared to the free jumps at the downstream zone of the Stilling basin (X/Y1>10).

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APA: Copy

MOUSAVI, S.N., FARSADIZADEH, D., SALMASI, F., & HOSSEINZADEH DALIR, A.. (2020). Effect of Hydraulic Jump Submergence on the Bed Pressure Fluctuations of the USBR Type II Stilling Basin. WATER AND SOIL SCIENCE (AGRICULTURAL SCIENCE), 30(2 ), 15-29. SID. https://sid.ir/paper/410801/en

Vancouver: Copy

MOUSAVI S.N., FARSADIZADEH D., SALMASI F., HOSSEINZADEH DALIR A.. Effect of Hydraulic Jump Submergence on the Bed Pressure Fluctuations of the USBR Type II Stilling Basin. WATER AND SOIL SCIENCE (AGRICULTURAL SCIENCE)[Internet]. 2020;30(2 ):15-29. Available from: https://sid.ir/paper/410801/en

IEEE: Copy

S.N. MOUSAVI, D. FARSADIZADEH, F. SALMASI, and A. HOSSEINZADEH DALIR, “Effect of Hydraulic Jump Submergence on the Bed Pressure Fluctuations of the USBR Type II Stilling Basin,” WATER AND SOIL SCIENCE (AGRICULTURAL SCIENCE), vol. 30, no. 2 , pp. 15–29, 2020, [Online]. Available: https://sid.ir/paper/410801/en

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