Affordable Access

Publisher Website

Modelling the bubble formation dynamics in non-Newtonian fluids

Authors
Journal
Chemical Engineering Science
0009-2509
Publisher
Elsevier
Publication Date
Volume
57
Issue
3
Identifiers
DOI: 10.1016/s0009-2509(01)00394-3
Keywords
  • Bubble
  • Formation
  • Modelling
  • Non-Newtonian Fluids
  • Interactions
Disciplines
  • Physics

Abstract

Abstract A theoretical model is developed for modelling the non-spherical bubble formation at an orifice submerged in non-Newtonian fluids under constant flowrate conditions. The equations of motion are, respectively, the radial expansion and vertical ascension of the bubble interface. They are combined with the thermodynamic equations for the gas in the bubble and the chamber below the orifice as well as the fluid rheological equation. In particular, the influence of in-line interactions between bubbles due to the fluid memory effects of the viscoelastic characteristics is taken into account for the first time. The present model is able to compute the instantaneous growing shape of the bubble during its formation and determine the final size of detachment as well as the frequency of bubble formation. The values predicted by this model compare satisfactorily with the experimental results obtained under different operating conditions.

There are no comments yet on this publication. Be the first to share your thoughts.

Statistics

Seen <100 times
0 Comments

More articles like this

Bubble formation in non-Newtonian fluids in a micr...

on Chemical Engineering and Proce... Jan 01, 2011

Study on bubble formation in non-Newtonian fluids...

on Optics & Laser Technology Jan 01, 2008

Modelling of non-Newtonian fluids

on Mathematics and Computers in S... Jan 01, 2007
More articles like this..