E136 MPS 法と MPS-MAFL 法

概要

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MPS (Moving Particle Semi-implicit) method is based on moving particles which interact among them. Particle interaction models are prepared for differential operators. The governing equations of continuums are transformed into particle dynamics using the interaction models. Grids are not necessary. Both fluid mechanics and structural mechanics are modeled by the MPS method. Fluid separation and coalescence can be analyzed without the troubles of grid deformation. Thermal-hydraulic problems involving large deformation of interfaces are analyzed. On the other hand, MPS method has some shortcomings due to fully Lagrangian description. Thus, MAFL (Meshless Advection using Flow-directional Local-grid) scheme is developed for convection terms. Combination of MPS and MAFL, called MPS-MAFL, enables us to use arbitrary Lagrangian-Eulerian (ALE) description. Direct simulation of nucleate boiling is carried out using the MPS-MAFL method.
日本流体力学会の論文
2000-07-25