Journal article
Deformation and oscillations of a single gas bubble rising in a narrow vertical tube
International journal of thermal sciences, Vol.47(3), pp.221-228
03/01/2008
DOI: 10.1016/j.ijthermalsci.2007.02.011
Abstract
A single gas bubble rising in a narrow vertical tube is investigated via a numerical model on a 3-D axisymmetric computational domain. The transient governing equations are solved by a finite volume scheme with a two-step projection method. The interface between the liquid and gas phase is tracked by a coupled level set and volume-of-fluid (CLSVOF) method. A surface tension modeling method, which preserves the jump discontinuity of pressure at the interface, is employed. The velocity distribution around the bubble and the bubble rise velocity obtained in the numerical simulation are in excellent agreement with experimental measurements. Special attention is paid to the bubble oscillations during the initial stage of ascent. It has been found that the bubble bottom undergoes severe oscillations while the nose maintains a stable shape. A parametric study is performed to identify the factors controlling the oscillations at the bubble bottom. (C) 2007 Elsevier Masson SAS. All rights reserved.
Details
- Title: Subtitle
- Deformation and oscillations of a single gas bubble rising in a narrow vertical tube
- Creators
- Zhaoyuan Wang - The University of Texas at ArlingtonAlbert Y. Tong - The University of Texas at Arlington
- Resource Type
- Journal article
- Publication Details
- International journal of thermal sciences, Vol.47(3), pp.221-228
- Publisher
- Elsevier
- DOI
- 10.1016/j.ijthermalsci.2007.02.011
- ISSN
- 1290-0729
- eISSN
- 1778-4166
- Number of pages
- 8
- Language
- English
- Date published
- 03/01/2008
- Academic Unit
- IIHR--Hydroscience and Engineering
- Record Identifier
- 9984748059802771
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