準剛体回転成層流を用いた微粒子分級の基礎研究 : 第2報,ハウジング・ロータ形状とエクマン層・内部領域の関係

概要

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We have theoretically considered the condition of a wall configuration necessary for the occurrence of a rigidly rotating region, Hide's prediction for an almost rigidly rotating through-flow between two rigidly rotating concentric spheres, and the relationship between the wall configuration and the flow structure of the interior region and the Ekman layer. The conclusions are as follows. (1) For the occurrence of the rigidly rotating region, it is necessary to make the axial section of the flow field C-shaped. (2) We have supported Hide's prediction theoretically and clarified the details of the flow structure. (3) When either the rotor or the housing walls, or both are disk-shaped, the interior axial velocity component ω_I is proportional to the thickness of the Ekman layer δ on the disk and the interior axial vorticity component ω_I. On the other hand, when both the rotor and the housing walls have curvatures, ω_I depends not only on δ and ω_I but also on the interior azimuthal velocity component and the radial change of δ.
一般社団法人日本機械学会の論文
1995-11-25