中空液滴の加速上昇運動

概要

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The buoyancy-driven motion of an encapsulated liquid drop in liquid-liquid-gas systems was analyzed experimentally and theoretically. To investigate the accelerated motion of the encapsulated drop in detail, the optical measuring device for the local upward velocity was designed. Furthermore, a simplified effective theory based on the experimental data was proposed for the rectilinear accelerated motion of the spherical encapsulated drop produced from the compound jet in the systems. The effects of drop radius and liquids, physical properties on the accelerated motion were clarified numerically. The drag components, which were composed of the steady drag term, the added mass term and the Basset history integral term, were also analyzed. The numerical results of the upward velocity quantitatively agreed with the experimental results in the intermediate Reynolds numbers; Re〜O(100).
一般社団法人日本機械学会の論文
1991-12-25