1407 準剛体回転流を用いた三産物分級方式における分級機形状と流量配分の制御による分級性能の高性能化(OS14-2 分散系混相流のダイナミクス,オーガナイズドセッション)

概要

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In a triple-product classifier using an almost rigidly rotating flow in which very small feed-powder particles suspended in a liquid medium (water) with a low mass-concentration are accurately classified into fine, medium and coarse products by the difference in centrifugal force and fluid drag acting on each particle due to the particle-size difference, with the aim of improving the performance of a medium product by controlling the classifier-shape, flow-rate distribution and governing parameters, we have considered the performance by numerically simulating the liquid-medium flow with the Navier-Stokes and continuity equations and the particle motion with the Basset-Bousinesq-Oseen equation. Consequently, we have reached the following conclusions. (1) When the width of medium-product outlet is varied, the mean diameter of the medium product changes. However, it is kept constant by suitably controlling the flow-rate distribution and governing parameters. (2) Narrowing the medium-product outlet brings better uniformity of particle and lesser yield.
一般社団法人日本機械学会の論文
2009-11-06