Numerical Simulation of Hydraulic Jump in the Stilling Pool of the Sluicing Steep Slope
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Abstract:
Hydraulic jump energy dissipation is often used in the water conservancy projects, and a lot of research has been conducted on the hydraulic jump by many domestic and foreign scholars. For the engineering practice, the characteristic values of hydraulic jump measured in the stilling pool of the sluicing steep slope differ significantly with those obtained from the standard method formula. In this paper, numerical simulations are performed to characterize the hydraulic jump in the stilling pool of the steep slope under different slopes, and the relationship between the length of hydraulic jump and the slope of stilling pool is analyzed based on the numerical simulations and indoor model tests. The lengths of hydraulic jump determined by the numerical simulations are compared with those obtained from the empirical formula and model tests. The results show that the relative errors of hydraulic jump are small between the numerical simulation results and measured values, while the relative errors are large between the numerical simulation results and calculated values from empirical formula. In the practical engineering design, the method of numerical simulation can be used in the preliminary design of stilling pool length.
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