D123 粒子法のラプラスモデルを利用した移流拡散現象の数値解と応用(D-12 流体一般(2),一般講演)

概要

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A numerical method for simulating the phenomena of mass diffusion in a fluid having free surface has been developed in this study. The calculation procedure of the current method is mainly separated into two stages: The first step is the original MPS method. Here the fluid is represented by moving particles and its convection is presented by the motion of those particles. The second step is the explicit method of mass diffusion. Mass diffusion among the moving particles is solved explicitly by using the Laplace model of the MPS in diffusion equation. A point source diffusion model has been solved by the current method and the Crank-Nicolson method is used to determine the optimal interaction radius of mass diffusion. As an example of mass diffusion, pouring diffusion model was simulated. The dynamic change of mass transport phenomena with convection and diffusion in large deformation of fluid suface were successfully simulated. This method was also applied to 3D model simulations.
日本流体力学会の論文
2004-08-09