Numerical Modeling of Breaking Periodical Waves on a Sloped Beach Profile by SPH

摘要

Results from a systematic verification and validation of SmoothedParticles Hydrodynamic methods for the numerical simulation ofperiodic breaking water waves on constant sloped beaches arepresented. Periodic waves are generated in deep water and thennumerically followed during their propagation in constant bottom depthand their transformation up to the breaking and run-up on a slopedbeach profile, in a 2D numerical flume wave tank. We verify theconsistency of the method first in the simpler case of deep water secondorder Stokes water waves generated with a flapped type wave-maker,investigating the effect of a number of tuning parameters of the SPHmethod like artificial viscosity and smoothing length, among others.Once these parameters have been set to ensure the correct reproductionof the kinematic properties of the generated waves the numerical modelis then validated in shallow water, following their transformation on aconstant slope bottom. Numerical results are compared withexperimental ones in terms of wave profiles and flow fieldcharacteristics at different longitudinal location along the sloped beachtaken.