準剛体回転成層流を用いた微粒子分級の基礎研究 : 第3報,安定な回転成層流の生成条件

概要

論文の詳細を見る
We have experimentally investigated the conditions of occurrence of a steady axisymmetric flow regime and the velocity distributions in the interior region and the Stewartson layer for an almost rigidly rotating. through-flow in a concentric-sphere system and a disk-cylinder system (the rotor and housing walls consist of disk and cylinder surfaces). The conclusions are as follows. (1) The steady axisymmetric flow regime occurs when ε≦2.0E^<0.48> in both systems, where ε and E are the Rossby and Ekman numbers, respectively. (2) The experimental results of the velocity distributions in the interior region agree with their linear analytical solutions. (3) The absolute value of the axial velocity component increases downstream and with a decrease of the Ekman number in the Stewartson layer along the rotor in the disk-cylinder system. (4) The reverse flow in the Stewartson layer which occurs in the gap between the rotor and housing walls is prevented by narrowing the gap.
一般社団法人日本機械学会の論文
1995-11-25