Numerical Simulation on Hydraulic Characteristics of Free Hydraulic Jump on Corrugated Beds of Stilling Basin

doi:10.16182/j.issn1004731x.joss.201704029

Abstract

Abstract: The VOF (volume of fluid) method was applied to track the free water surface, and the RNG k–ε turbulent model was used to close the two-phase flow time-averaged equations. The conditions properties of free hydraulic jumps on corrugated beds with a stilling basin under 9 kinds of conditions were studied by numerical simulation. Simulation research results show: There are vortexes generated by corrugated beds surfaces, rotating in the clockwise direction. The pressure distribution on corrugated beds in hydraulic jump region appears a wavy change, and the difference between the pressure values at adjacent crest and trough gradually decreases along main flowing direction. With the same the gate opening and bottom roughness, the length of hydraulic jump and the efficiency rate of energy dissipation increase with Froude number increasing at the inlet section of the stilling pool with corrugated beds.

Key words: Corrugated bed, stilling basin, numerical simulation, energy dissipation rate

CLC Number:

TP391.1

Wei Wenli, Hong Yunfei, Liu Yuling. Numerical Simulation on Hydraulic Characteristics of Free Hydraulic Jump on Corrugated Beds of Stilling Basin[J]. Journal of System Simulation, 2017, 29(4): 918-925.

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