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We have been investigating a sediment-laden flow used by a solid-liquid two phase flow model, in which motion of each particle is tracked by solving the Basset-Boussinesq-Oseen (BBO) equation. Hence, a modeling of interaction between solid- and liquid- phase was required, and consequently an accuracy of flow velocity field around particles was insufficient. In this study, we developed a model to solve the flow field around each particle with high resolution, and the Distinct Element Method (DEM) is applied to track each particle with taking interparticle force into account. After the performance of this model is confirmed in a basic test, a sedimentation process of particles in liquid was simulated.

High-resolving calculation of sedimentation process by DEM-base solid/liquid two-phase flow model