Multi-resolution MPS method

JOURNAL OF COMPUTATIONAL PHYSICS

卷:359

Article

Tanaka, Masayuki^1,2  Cardoso, Rui¹  Bahai, Hamid¹ 

[1] Brunel Univ London, Kingston Lane, London UB8 3PH, England

[2] Toshiba Co Ltd, Corp Mfg Engn Ctr, Isogo Ku, 33 Shinisogo Cho, Yokohama, Kanagawa 2350017, Japan

关键词: Particle method;    Least square MPS method;    Multi-resolution;    Incompressible fluid;    Wall boundary;    Pressure boundary;   

DOI  :  10.1016/j.jcp.2017.12.042

来源: Elsevier

【 摘 要 】

In this work, the Moving Particle Semi-implicit (MPS) method is enhanced for multi-resolution problems with different resolutions at different parts of the domain utilising a particle splitting algorithm for the finer resolution and a particle merging algorithm for the coarser resolution. The Least Square MPS (LSMPS) method is used for higher stability and accuracy. Novel boundary conditions are developed for the treatment of wall and pressure boundaries for the Multi-Resolution LSMPS method. A wall is represented by polygons for effective simulations of fluid flows with complex wall geometries and the pressure boundary condition allows arbitrary inflow and outflow, making the method easier to be used in flow simulations of channel flows. By conducting simulations of channel flows and free surface flows, the accuracy of the proposed method was verified. (C) 2018 Elsevier Inc. All rights reserved.

【 授权许可】

Free