| Автор | Ohta, Mitsuhiro |
| Автор | Yoshida, Yutaka |
| Автор | Sussman, Mark |
| Дата выпуска | 2010-04-01 |
| dc.description | We present the results of three-dimensional direct numerical simulations of the dynamic motion of a gas bubble rising in Carreau model fluids. The simulations are carried out by a coupled level-set/volume-of-fluid (CLSVOF) method, which combines some of the advantages of the volume-of-fluid (VOF) method with the level-set (LS) method. In our study, it is shown that the motion of a rising gas bubble largely depends on the Carreau model parameters, n and B (n, the slope of decreasing viscosity and B, time constant). Both the model parameters, n and B, have considerable influence on the bubble rise motion. Using numerical analysis, we can understand in detail the bubble morphology for non-Newtonian two-phase flow systems. We also discuss bubble rise motion in shear-thinning fluids in terms of the effective viscosity, η<sub>eff</sub>, the effective Reynolds number, Re<sub>eff</sub> and the effective Morton number, M<sub>eff</sub>. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Копирайт | 2010 The Japan Society of Fluid Mechanics and IOP Publishing Ltd |
| Название | A computational study of the dynamic motion of a bubble rising in Carreau model fluids |
| Тип | paper |
| DOI | 10.1088/0169-5983/42/2/025501 |
| Electronic ISSN | 1873-7005 |
| Print ISSN | 0169-5983 |
| Журнал | Fluid Dynamics Research |
| Том | 42 |
| Первая страница | 25501 |
| Последняя страница | 25515 |
| Аффилиация | Ohta, Mitsuhiro; Division of Applied Sciences, Graduate School of Engineering, Muroran Institute of Technology, 27-1 Mizumoto-cho, Muroran, Hokkaido 050–8585, Japan |
| Аффилиация | Yoshida, Yutaka; Division of Applied Sciences, Graduate School of Engineering, Muroran Institute of Technology, 27-1 Mizumoto-cho, Muroran, Hokkaido 050–8585, Japan |
| Аффилиация | Sussman, Mark; Department of Mathematics, Florida State University, Tallahassee, FL 32306, USA |
| Выпуск | 2 |
