Improvements in MLPG formulation for 3D wave interaction with fixed structures

This paper presents new developments in meshless local Petrov–Galerkin with Rankine source (MLPG_R) particle based method for studying interaction of waves fixed structures a numerical wave-tank. A 3D formulation the Lagrangian flow problem incompressible fluid optimised solution strategy is presented. The pressure Poisson equation solved weak-form integration done semi-analytically using symmetric expression. wave-generation one-way coupling 2D fully-nonlinear potential theory finite-element model. Further simple identification free-surface particles proposed, which shown to work well vicinity structure. solid-wall boundary condition treated ghost and mirror accurate calculation gradients. waterline on domain faces tangentially moving side-wall approach makes this scheme capable capturing small amplitude focusing waves. briefly experimental setup used emergent cylinder uni-directional regular 3D. model validated against results from experiment. An analysis conducted parameters related domain, wave-making algorithm, distribution time-step. highlights use hybrid efficient simulation waves-structure interaction.