abstract

• We consider the deformation of gas bubbles rising in different liquids over a wide range of Morton numbers, from O(10-11) to O(1), and bubble diameters. We have collected data from the literature and performed new experiments for relatively large Morton numbers. A simple expression is proposed to describe the evolution of the bubble deformation, which is consistent with the analytical solution of Moore [The rise of a gas bubble in a viscous liquid, J. Fluid Mech.6, 113 (1959)]. It appears that deformation can be predicted correctly by considering the Morton and Weber numbers. The variation of the bubble interfacial area is also analyzed; this quantity is very important for the case of bubbly flow modeling but has not been measured directly to date. © 2012 American Institute of Physics.

authors

• Legendre D.
• Vélez Cordero Juan Rodrigo
• Zenit R.

publication date

• 2012-01-01

published in

• Physics of Fluids  Journal

keywords

• Bubble formation; Bubbles (in fluids); Liquids; Bubble deformation; Bubble diameter; Bubbly flow; Interfacial areas; Morton numbers; Simple expression; Viscous liquids; Weber numbers; Deformation

Digital Object Identifier (DOI)

• 10.1063/1.4705527

start page

end page

volume

• 24

issue

• 4