Concepedia

A weakly compressible MPS method for modeling of open‐boundary free‐surface flow

International Journal for Numerical Methods in Fluids · 2009 · 208 citations · 31 references

TL;DR

A mesh‑free particle method based on the moving particle semi‑implicit (MPS) interaction model has been developed to simulate two‑dimensional open‑boundary free‑surface flows. The study extends the MPS model to open‑boundary problems by introducing new inflow–outflow boundary conditions and a particle recycling strategy. The authors replaced the original MPS incompressibility model with a weakly incompressible one, added new inflow–outflow boundary conditions and a particle recycling strategy, and validated the resulting algorithms on sample problems to assess efficiency and accuracy. The final model successfully simulates open‑boundary free‑surface flow with large deformation and fragmentation, confirming its efficiency and accuracy. © 2009 John Wiley & Sons, Ltd.

Abstract

Abstract A mesh‐free particle method, based on the moving particle semi‐implicit (MPS) interaction model, has been developed for the simulation of two‐dimensional open‐boundary free‐surface flows. The incompressibility model in the original MPS has been replaced with a weakly incompressible model. The effect of this replacement on the efficiency and accuracy of the model has been investigated. The new inflow–outflow boundary conditions along with the particle recycling strategy proposed in this study extend the application of the model to open‐boundary problems. The final model is able to simulate open‐boundary free surface flow in cases of large deformation and fragmentation of free surface. The models and proposed algorithms have been validated and applied to sample problems. The results confirm the model's efficiency and accuracy. Copyright © 2009 John Wiley & Sons, Ltd.