Title : ( Numerical Simulation of Flow Instabilities during the Rise of a Bubble in a Viscous Liquid )
Authors: Mohammad Passandideh-Fard , Mehran Mohammadi Farhangi , Hossein Moin ,
Full TextAbstract
In this paper, the flow instabilities during the rise of a single bubble in a narrow vertical tube are studied using a transient 2D/axisymmetric model. These instabilities include the oscillation of the bubble shape and formation of a wake behind it. In the model, the Navier-Stokes equations in addition to an advection equation for liquid volume fraction are solved. A modified Volume-of-Fluid (VOF) technique based on Youngs’ algorithm is used to track the liquid/gas interface. The numerical results are validated by a comparison with available measurements. The effect of different parameters such as tube and bubble diameters, and liquid properties are investigated.
Keywords
, Bubble rise, Flow instabilities, Numerical simulation, VOF method
@inproceedings{paperid:1008093,
author = {Passandideh-Fard, Mohammad and Mohammadi Farhangi, Mehran and Moin, Hossein},
title = {Numerical Simulation of Flow Instabilities during the Rise of a Bubble in a Viscous Liquid},
booktitle = {The 12th Asian Congress of Fluid Mechanics},
year = {2008},
location = {Daejeon, south korea},
keywords = {Bubble rise; Flow instabilities; Numerical simulation; VOF method},
}
%0 Conference Proceedings
%T Numerical Simulation of Flow Instabilities during the Rise of a Bubble in a Viscous Liquid
%A Passandideh-Fard, Mohammad
%A Mohammadi Farhangi, Mehran
%A Moin, Hossein
%J The 12th Asian Congress of Fluid Mechanics
%D 2008
