Grid-Stamping on a Polygon Model for Implementing Arbitrary-Shaped Boundary Conditions in a Moving Particle Semi-Implicit Method

This study proposes a new wall boundary condition for the grid-stamping on polygon (G-StoP) model, which enables simpler and more efficient handling of surfaces arbitrarily complex-shaped bodies represented using polygons (or meshes). For example, computer-aided design surface data can be used to analyze flow particle-based fluid-solver moving particle semi-implicit method. coupling simulations fluid–multibody dynamics, Pusan-National-University-modified MPS method is improved, analysis performed RecurDyn, commercial software package multibody flexible multibody) dynamics. To confirm applicability developed G-StoP hydrostatic pressure are conducted in rectangular tank at various corner angles. Then, results compared with previously proposed polygonal model theoretical solutions. That is, case angle 30°, it was confirmed that relative error experiment 11.3%, while 1.3%. demonstrates exceptional numerical stability robustness even when difficult secure information neighboring particles as object becomes small. In addition, applied dam breaking, subaerial landslide tsunami, wine sloshing problems, its accuracy were tested through comparison experimental other simulation results. As result, shown present much closer experiments than simulations.