上昇する球形気泡の溶解過程に関する研究

概要

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Dissolution process of a spherical rising gas bubble was investigated experimentally and numerically. We developed an experimental apparatus in which a CCD camera with a microscope follows the rising bubble and used it to precisely estimate the Sherwood number for the dissolution of the bubble below Reynolds number of 100 by measurement of the bubble size and the rising speed. We also estimated numerically Sherwood number for a dissolution of a gas bubble in an infinite liquid by directly solving a diffusion equation using the velocity distribution which we have already calculated in the previous work. The experimental results agree well with the numerical results. Moreover, we compared the experimental results with several proposed equations for estimating Sherwood number and determined the region of applicability of each equation.
一般社団法人日本機械学会の論文
1998-02-25