圧力分布による粉体流出 : 双曲線容器の場合

概要

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The discharge of powder from a vessel under gravity is often stopped by the formation of bridging. The shape of a vessel exerts a distinguished influence on bridging. It is known that a hyperbolic vessel (whose degree of reduction is uniform in cross sectional area toward the outlet) can avoid irregularities in the discharge and gives a uniform density of the discharged powder. By the pressure distribution in powder, the effect of the shape of a hyperbolic vessel has been studied mathematically, assuming that the curvature of the wall of a vessel or the height of powder is small. It seems that a hyperbolic vessel whose pattern of the pressure distribution is similar to that of a cylindrical vessel has the higher discharge efficiency, and that a conical vessel whose pattern is not similar to that of a cylindrical vessel has the lower one.
山脇学園短期大学の論文