Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9692413 | International Journal of Multiphase Flow | 2005 | 15 Pages |
Abstract
In order to examine the influence of initial bubble conditions on bubble rise motion, two-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. For dimensionless groups predicting a “spherical-cap bubble shape” (high Eötvös and low Morton numbers), we have found computationally that solutions depend on initial bubble conditions. Specifically, for spherical-cap bubble areas, we could obtain computational results of toroidal bubbles or spherical-cap bubbles depending on initial bubble conditions. On the other hand, we showed for low Eo and high M conditions that initial bubble conditions did not affect the final state of bubble rise motion.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
Mitsuhiro Ohta, Tatsuya Imura, Yutaka Yoshida, Mark Sussman,