Influence of Enveloping Water Layer on the Rise of Air Bubbles in Newtonian Fluids

[+] Author and Article Information
J. L. Mercier, F. M. da Cunha, J. C. Teixeira, M. P. Scofield

Departamento de Engenharia Mecanica, Pontificia Universidade Catolica do Rio de Janeiro, Brazil

J. Appl. Mech 41(1), 29-34 (Mar 01, 1974) (6 pages) doi:10.1115/1.3423253 History: Received January 01, 1973; Revised April 01, 1973; Online July 12, 2010


The rise of air bubbles in five Newtonian fluids is compared for two different cases of bubble formation and release: (a) directly into the five homogeneous fluids and (b) directly into a layer of distilled water underlying each one of the five liquids. It was found in Case (b) that medium-sized bubbles rise steadily through the upper liquid with an enveloping water layer of variable thickness. The influence of this water layer on the trajectory, shape, and terminal velocity of bubbles is particularly significant in low viscosity upper phases. The resulting water mass transfer per bubble through the lower density upper phase depends on viscosity and was markedly greater for the higher viscosity fluids. The behavior and the nature of the detachment of the water layers from the larger size bubbles are also presented and discussed.

Copyright © 1974 by ASME
Your Session has timed out. Please sign back in to continue.






Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In