NUMERICAL MODELLING OF WAVE- MUD INTERACTION USING INCOMPRESSIBLE SMOOTHED PARTICLE HYDRODYNAMICS (ISPH) WITH A NEW KERNEL FUNCTION

A typical phenomenon of wave propagating over a muddy bed is the dissipation of the wave energy due to the wave-mud interaction. In this paper, due to somepopular features of meshless method in simulation of fluid behaviour and particle tracing, incompressible smoothed particle hydrodynamics (ISPH) method hasbeen deployed to simulate wave and non-Newtonianmud interaction. A new hybrid kernel function and formulation of viscous term are presented, wheredifferent kernel functions for water and mud layer have been considered. The new hybrid kernel function and the spline kernel were used for mud and water layers,respectively. The combination of two kernel functions results in better simulation of the interface of the two layers as well as preventing particle clustering.