Fluid flow simulation using MPS method with mirror particle boundary representation

Abstract

In this paper, we propose a novel algorithm of two-dimensional wall boundary representation for the computational fluid dynamics using MPS method. The proposed method is based on the conventional mirror particle method, while it utilizes the visibility determination for the mirror particle generation and the neighbor particle selection. In the mirror particle generation, we consider mirror particle’s mirror particle to avoid lack of particle number density for concave wall boundary. This present algorithm can be applied to complex boundary shape. Furthermore, problems with zero thickness obstacle can faithfully be analyzed because the neighbor particle selection with the visibility determination can detect inappropriate particle connections across boundary. The proposed method is applied to several test problems, and it is found that the present mirror particle boundary representation is robust and applicable to practical problems.