粘性流体中における気泡上昇運動の数値解析

概要

論文の詳細を見る
Three-dimensional direct numerical simulations of the motion of a gas bubble rising in viscous liquids were carried out by a coupled level-set/volume-of-fluid (CLSVOF) method that combines some of the advantages of the volume-of-fluid (VOF)method with the level-set (LS). In our study, physical properties of real gas-liquid systems were introduces in the computations: the density ratio between both phases can be up to about 800 and the viscosity ratio reaches - about 50000. Consequently, it will be shown that we can numerically reproduce three-dimensional bubble rise motion including nonlinear dynamics for the full range of bubble shapes and physical parameters (e.g. high Reynolds number) with good agreement with experimental results. Also, we shall show the effectiveness and validity of our numerical (CLSVOF) methods for two-phase flow.
開発技術研究会の論文