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|Title:||Dynamic behaviour of a bubble near an elastic infinite interface|
|Keywords:||Boundary integral method|
Oscillating non-equilibrium bubble
|Citation:||Klaseboer, E., Turangan, C.K., Khoo, B.C. (2006-09). Dynamic behaviour of a bubble near an elastic infinite interface. International Journal of Multiphase Flow 32 (9) : 1110-1122. ScholarBank@NUS Repository. https://doi.org/10.1016/j.ijmultiphaseflow.2006.05.005|
|Abstract:||This paper presents a study to describe the behaviour of a non-equilibrium bubble in a fluid (Fluid 1) that is in contact with another fluid (Fluid 2). Fluid 2 is assumed to incorporate some elastic properties, which are modelled through a pressure term at the fluid-fluid interface. The Laplace equation is assumed to be valid in both fluids and the boundary integral method is employed to simulate the dynamics of the bubble and the fluid-fluid interface. Interesting characteristic phenomena concerning bubble oscillations and the deformation of the fluid-fluid interface are studied for a range of parameters (distance from the fluid-fluid interface, density ratios of the two fluids and elastic properties of Fluid 2). Some of the phenomena observed are jet formation in the bubble, bubble splitting, a ring bubble separating from the main bubble, mushroom-shaped bubbles and the dynamic elevation of the elastic interface. Most of these phenomena are only observed when Fluid 2 possesses some elastic properties (besides the usual formation of a high speed liquid jet). Comparisons with experimental observations confirm the validity of our simulations. © 2006 Elsevier Ltd. All rights reserved.|
|Source Title:||International Journal of Multiphase Flow|
|Appears in Collections:||Staff Publications|
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