FINE POWDER PERCOLATION THROUGH GRANULER LAYER

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  • 粒状体層中の小粒子透過挙動

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The percolation of fine grains through granular bed is an important phenomenon in various engineering fields. This study focuses on the effect of inter-granular adhesion on the percolation ratio. A series of experiments with spherical glass beads and irregularly-shaped particles was performed, and the results were compared with Discrete Element simulations considering van der Waals (vdW) attraction model. It turned out that the simulation can reproduce the experimental results quantitavely. It was also found that the effect of inter-granular adhesion is not negligible even in the percolation of relatively large grain as 400-700μm.

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