Investigation of Hydraulic Jump Turbulence Parameters in Divergent Rectangular Sections using Fluent Model

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NIKPOUR M.R.

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Journal: Journal of Irrigation Sciences and Engineering Year:2018 | Volume:41 | Issue:2 Page(s): 61-75

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Title

Investigation of Hydraulic Jump Turbulence Parameters in Divergent Rectangular Sections using Fluent Model

Author(s)

NIKPOUR M.R. | Issue Writer Certificate

Keywords

Bistable flowQ1

Divergent sectionQ1

Hydraulic jumpQ2

Stilling basinQ1

Turbulence modelQ2

Abstract

A Stilling basin with Divergent section has better performance and lower constructional costs than the classic basin. It can easily adapt itself to the upstream and downstream conditions in terms of depths and cross sections (Omid et al., 2007). Khalifa and McCorquodale (1979) studied radial Hydraulic jumps in a gradually expanding channel of rectangular cross section and developed a theoretical equation assuming a second degree polynomial for the surface profile. Omid et al. (2007) studied the Hydraulic jump formed in a gradually expanding Stilling basin of trapezoidal cross section. They also investigated the Hydraulic jumps for three different basin side slopes. Their experimental results indicated that the divergence of the basin for a given side slope causes reductions in the sequent depth and jump length, and an increase of the energy loss in jump relative to those observed in rectangular cross sections. Sahebi (2013) simulated a divergent Hydraulic jump in rectangular basins using standard and RNG Turbulence models. The outputs of the numerical model showed that the standard Turbulence model evaluated the free surface of flow, jump length and maximum velocity in defined sections better than RNG Turbulence model. In this study, for seven Froude numbers in the range of 3. 2-9. 1, three models of the divergent basins were numerically simulated at three dimensional conditions with various geometries of divergence angle and wall type. The k-ε RNG and RSM models were used for turbulence analysis and volume of fluid (VOF) model was used for simulating of free surface profile in the Fluent model. Also, vertical distributions of turbulence intensity, Reynolds stresses and turbulent kinetic energy were investigated using the RSM model in various sections of the Hydraulic jumps...

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APA: Copy

NIKPOUR, M.R.. (2018). Investigation of Hydraulic Jump Turbulence Parameters in Divergent Rectangular Sections using Fluent Model. IRRIGATION SCIENCES AND ENGINEERING (JISE) (SCIENTIFIC JOURNAL OF AGRICULTURE), 41(2 ), 61-75. SID. https://sid.ir/paper/217210/en

Vancouver: Copy

NIKPOUR M.R.. Investigation of Hydraulic Jump Turbulence Parameters in Divergent Rectangular Sections using Fluent Model. IRRIGATION SCIENCES AND ENGINEERING (JISE) (SCIENTIFIC JOURNAL OF AGRICULTURE)[Internet]. 2018;41(2 ):61-75. Available from: https://sid.ir/paper/217210/en

IEEE: Copy

M.R. NIKPOUR, “Investigation of Hydraulic Jump Turbulence Parameters in Divergent Rectangular Sections using Fluent Model,” IRRIGATION SCIENCES AND ENGINEERING (JISE) (SCIENTIFIC JOURNAL OF AGRICULTURE), vol. 41, no. 2 , pp. 61–75, 2018, [Online]. Available: https://sid.ir/paper/217210/en

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