粒子の集団挙動における非球形・可変形性の効果(数値計算(3),一般講演)

概要

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In this paper, IB-FEM is presented as effective computational method for interaction between multiple elastic objects and a fluid. The fluid phase is solved by Immersed Boundary Method (IBM) of body-force type. Deformation of objects is computed by incorporating fluid-solid interaction force of the IBM in external force vector of Finite Element Method (FEM). The applicability of the present method is shown by direct numerical simulation of flow fields including multiple deformable particles, and physical mechanism of group behavior of deformable particles is investigated. We demonstrated that the non-circularity and deformable feature caused the difference not only in settling behaviour of each particles but also in the collective dynamics of two-phase flow field due to the interaction between particles through fluid phase.
2008-09-04