A method for the numerical prediction of scouring processes is proposed. The method is based on a Lagrangian description of the flow by Smoothed Particle Hydrodynamics, coupled with a description of the bed evolution based on the Exner equation and solved by a finite-difference predictor-corrector scheme. The numerical solutions are compared with measurements of bed evolution and water velocity, obtained in a case of local scour downstream of a protection apron caused by a planar jet flowing from a sluice gate. The results show that the predicted evolution of position and depth of the maximum scour agrees quite well with the experimental data.

A SPH-based method to simulate local scouring

SIBILLA, STEFANO
2008-01-01

Abstract

A method for the numerical prediction of scouring processes is proposed. The method is based on a Lagrangian description of the flow by Smoothed Particle Hydrodynamics, coupled with a description of the bed evolution based on the Exner equation and solved by a finite-difference predictor-corrector scheme. The numerical solutions are compared with measurements of bed evolution and water velocity, obtained in a case of local scour downstream of a protection apron caused by a planar jet flowing from a sluice gate. The results show that the predicted evolution of position and depth of the maximum scour agrees quite well with the experimental data.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11571/141345
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