Numerical model for flow through sluice gate in whole rates of submergence

Document Type : Research Paper

Authors

1 Department of Irrigation and Reclamation Engineering,Faculty of Agricultural Engineering and Technology, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran

2 University College of Agriculture and Natural Resources, University of Tehran

3 Imam Khomeyni University

Abstract

A 2-D numerical model employed to analyze submerged jump through the sluice gates. The results compared versus existing experimental data and the currently exercising equations. Afore mentioned laboratory data cover a wide range of submergence ratio. The standard model was utilized as a closure model for analyzing turbulence effects via OpenFOAM toolbox. Free surface captured using VOF method. Water surface profile, velocity distribution along flow depth, forward flow and roller zone specifications acquired after running model in different conditions analogous to experiments. Since the sub-surface flow is not counted in 2-D model, the non-dimensional velocity profiles show that the model overestimates velocities. Submergence ratio proved significant impression on potential core height and tail water depth. The discrepancies between model and experiments reduced in developed flow region further from the gate. This effect associate with diminishing turbulences and consequently approaching to a real 2-D flow. Defining appropriate boundary conditions conferred.

Keywords

Main Subjects

References

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Iranian Journal of Soil and Water Research
Volume 49, Issue 3
May and June 2018
Pages 583-596

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