G0500-6-4 準剛体回転流を用いた三産物分級方式の中間粉産物に関するスケール側の数値的考察([G0500-6]流体工学部門一般講演(6))

抄録

In a triple-product classifier using an almost rigidly rotating flow in which small feed-powder particles suspended in a liquid medium 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 considering the scaling law on a medium product, we have numerically simulated the liquid-medium flow with the Navier-Stokes and continuity equations and the particle motion with the Basset-Bousinesq-Oseen equation. First, partial fractional efficiencies Δη_F, Δη_C of fine and coarse products are represented by govering parameters as the scaling law. Second, the partial fractional efficiency Δη_M of a medium product is determined by Δη_F and Δη_C. Third, the yield and variation coefficient of the mean product are derived by Δη_M, in order to consider the medium-product throughput and uniformity of particle.