Abstract
This paper presents a numerical study of the hydraulic jump on corrugated riverbed using the Smoothed Particle Hydrodynamics (SPH) method. By simulating an experimental benchmark example, the SPH model is demonstrated to predict the wave profile, velocity field, and energy dissipation rate of hydraulic jump with good accuracy. Using the validated SPH model, the dynamic evolvement of the hydraulic jump on corrugated riverbed is studied focusing on the vortex pattern, jump length, water depth after hydraulic jump, and energy dissipation rate. In addition, the influences of corrugation height and length on the characteristics of hydraulic jump are parametrically investigated.
Highlights
Corrugated riverbed is a new energy dissipater
Acknowledging the value of the work done by Chern and Syamsuri [33], we study the effects of corrugated beds on the characteristics of hydraulic jumps due to their importance
Within the range of Fr = 4–7, the energy dissipation rate of stilling basin with corrugated riverbed ranges between 45.7% and 67.4%, being around 10% higher than that of smooth riverbed
Summary
Corrugated riverbed is a new energy dissipater. It is the corrugation-shape base plate of stilling basin. A two-dimensional (2D) SPHysics (http://www.sphysics.org) model, which is based on the Weakly Compressible SPH (WCSPH) method is applied to study the hydraulic jump on corrugated riverbeds and detailed results and discussions on the characteristics of hydraulic jump, such as jump length, jump height and energy dissipation rate are presented, and the effect of corrugation wave height and length on the hydraulic jump characteristics are parametrically studied. Further details of those effects are presented, while the results are validated by a set of experimental data
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