MPM simulation of solitary wave run-up on permeable boundaries

Waves attenuate rapidly as they propagate through porous media due to significant energy dissipation. The ability of permeable armour layers absorb wave is therefore great interest the researchers and engineers tasked with construction structures that defend vulnerable coastlines from attack. goal this research determine effectiveness vertical sloped barriers in minimising run-up. Traditional methods for ascertaining efficacy protective have used small-scale physical models. However, these are expensive been shown suffer scaling problems, numerical gaining popularity. This paper investigates effect modifying mean grain size a barrier on run-up response solitary wave, using Material Point Method (MPM), which capable handling large deformation problems within Lagrangian framework, background mesh facilitating solution governing equations allowing simple imposition boundary conditions. A double-point MPM adopted, two sets material points representing solid liquid phases respectively, accurately model situations where fluid moves skeleton, such case structures. multi-phase version package Anura3D (www.anura3d.com) study, focus influence changing composition particles structure run-ups, both boundaries. It has an increase size, permeability, overall height can be significantly reduced. proposed study could contribute better understanding reduction structures, provide useful design guidelines coastal defences.