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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
