Numerical simulation of drop migration in channell flow under zero-gravity |
| |
Authors: | Liu Tao Lu Xiyun |
| |
Institution: | (1) Department of Modern Mechanics, University of Science and Technology of China, 230026 Hefei, China |
| |
Abstract: | The migration of deformable drops in the channel flow neglecting the gravity influence is investigated numerically by solving
the incompressible Navier-Stokes equations using the finitedifference method coupled with the front-tracking technique. The
objectives of this study are to examine the effectiveness of the present approach for predicting the migration of drops in
a shear flow and to investigate the behavior of the drop migration in the channel flow under zero-gravity. To validate the
present calculation, some typical results are compared with available computational and theoretical data, which confirms that
the present approach is reliable in predicting the drop migration. With respect to the drop migration in the channel flow
at finite Reynolds numbers, the drops either move to an equilibrium lateral position or undergo an oscillatory motion under
different conditions. The effects of some typical parameters, e.g., the Reynolds number, the Weber number, the viscosity ratio
and the density ratio of the drop fluid to the suspending medium, and the drop size, on the migration of drops are discussed
and analyzed.
The project supported by the National Natural Science Foundation of China (10125210) and the Hundred-Talent Programme of the
Chinese Academy of Sciences |
| |
Keywords: | drop migration zero-gravity front-tracking method finite-difference method |
本文献已被 维普 SpringerLink 等数据库收录! |
|