Smoothed Particle Hydrodynamics (SPH) Modelling of Tsunami Waves Generated by a Fault Rupture

Abstract

In this paper we use a single phase weakly compressible SPH model to simulate the flow that occurs in experimental models of tsunamis generated by an earthquake fault rupture. The experiments have been carried out at University of Plymouth’s COAST laboratory. Fortran code has been written to implement the SPH method. In order to obtain a good SPH particle distribution in the vicinity of the moving plate, and accurate predictions, careful consideration of the SPH boundary conditions is required. SPH simulations have been carried out using the ghost boundary particle method to implement boundary conditions. The SPH model gives generally good predictions of the free surface elevation.