低レイノルズ数域における球形粒子の壁近傍での移動速度(流体工学,流体機械)

概要

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Migration velocity of a spherical particle near a vertical wall in silicon oil was measured experimentally below Reynolds number of 1. We precisely measured the falling speed and the distance between the particle and the wall and then estimated the lateral migration velocity. We also estimated the migration velocities by using the analytical solutions obtained under the condition where the wall lies in the Stokes and Oseen region of the flow disturbance produced by the particle, respectively and compared them with the experimental results. The results reveal that the parallel and lateral migration velocities transit from the Stokes solution to the Oseen one when the particle goes away from the wall. And also the migration velocities can be approximately estimated by the equation corrected the analytical solutions.
社団法人日本機械学会の論文
2004-01-25