Cerca nel sito per parola chiave

pubblicazioni - Memoria

SPH modelling of granular flows

pubblicazioni - Memoria

SPH modelling of granular flows

Abbiamo sviluppato un modello SPH bifase 3D per flussi granulari come dam break (crolli di diga) erosivi, dam breaches (evoluzione di brecce in dighe in terra), frane rapide, fenomeni di erosione e trasporto solido di fondo, rimozione di sedimenti in bacini idrici. Diverse validazioni preliminari sono riportate a supporto dello studio.

This study describes the development of a 2-phase 3D SPH model for granular flows. The numerical solution is based on a SPH approximation of the mixture model of Chauchat-Médale (2010), a 2D finite volume code. The new model represents the dynamics of a mixture of pure fluid (e.g. water) and solid granular material (e.g. sand; mixture viscosity is not a tuning parameter).

Further, we have investigated a faster and approximated solution, in case erosion is the only cause of mobilization for solid grains. Preliminary validations involve three 2D erosional dam breaks, a 2D submerged landslide and a 3D erosional dam break. Further, we provide model inter-comparisons on a 2D flushing test case and represent a demonstrative 3D dam breach event.

Progetti

Commenti