Full Content is available to subscribers

Subscribe/Learn More  >

Wet Foam Flow in Horizontal Square Duct and Through Singularities

[+] Author Affiliations
Rogelio Chovet, Fethi Aloui, Larbi Labraga

Université Lille Nord de France, Lille, FranceUVHC, Valenciennes, France

Paper No. FEDSM2013-16307, pp. V01CT17A012; 7 pages
  • ASME 2013 Fluids Engineering Division Summer Meeting
  • Volume 1C, Symposia: Gas-Liquid Two-Phase Flows; Industrial and Environmental Applications of Fluid Mechanics; Issues and Perspectives in Automotive Flows; Liquid-Solids Flows; Multiscale Methods for Multiphase Flow; Noninvasive Measurements in Single and Multiphase Flows; Numerical Methods for Multiphase Flow; Transport Phenomena in Energy Conversion From Clean and Sustainable Resources; Transport Phenomena in Materials Processing and Manufacturing Processes; Transport Phenomena in Mixing; Turbulent Flows: Issues and Perspectives
  • Incline Village, Nevada, USA, July 7–11, 2013
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 978-0-7918-5556-0
  • Copyright © 2013 by ASME


In this study, we characterize experimentally, the behavior of a wet foam flow along a square channel and through some singularities (an enlargement and a fence). The enlargement characteristics are a square section 21×21 mm2 at the upstream and a rectangular section of 21 × 42 mm2 at the downstream, for an aspect ratio of 0.5. As for the fence, it presents a height of 10 mm, a width of 5 mm and an inclination at its point of 45°. Experimental data were obtained in order to well understand the singularity effects over the foam flow and its texture in the immediate vicinity of this latter. The experimental investigation is focused into finding the wall shear stress and the liquid film which links the duct walls to the foam flow. The properties of the foam and the influence of this phenomenon might have an important role. We try to relate the wall shear stress obtained experimentally to determine the rheological properties of the foam. The use of different experimental devices and measurement techniques allow the comprehension of physical phenomena aspects that govern the foam structure. The PIV method gives the dynamics of the wet foam including the velocity fields near the walls. These ones are experimentally obtained from a series of instantaneous snapshots that will capture the bubbles movement. The innovative use of the polarographic method hands the measurements of the mass transfers, from which wall shear stress between the foam flow and the Plexiglas walls of the channel can be determined. The mass transfer measurement technique is based on a polarography method, by measuring the redox reaction controlled by the convection and diffusion phenomenon. The conductimetry technique, based on the measurement of the electric resistance in a liquid volume, allows the accurate perception of the liquid film thickness formed between the foam flow and the walls. The static pressure losses are directly obtained by the measurements taken from a series of pressures taps placed in the bottom wall of the channel. This parameter will allow the determination of the foam flow behavior. It is taken into consideration a one-dimensional flow, meaning that the established flow behaves as a piston or move as a bloc, with a foam velocity of 2.3 cm/s. All experiments lead to determine the general tendency of the foam flow structure along the square channel and the singularities, including its rheology behavior and drainage ability.

Copyright © 2013 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

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 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