Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.



Foam trapping in a 3D porous medium: in situ observations by ultra-fast X-ray microtomography

Author affiliations

Abstract

One of the challenges in the study of foam transport in 3D porous media is to have an adequate spatial and temporal resolution to get a better understanding of the local phenomenon at the pore scale in a non-destructive way. We present an experimental study in which ultra-fast X-ray microtomography is used to investigate the foam trapping while the foam is flowing in a 3D porous medium. Preformed aqueous foam is injected into a rotating cell containing a 3D granular medium made of silica grains. The use of rotating seals allows the cell to rotate continuously at a rate of one revolution per second, compatible with the fast X-ray tomography at SOLEIL synchrotron. We visualize the foam flow and track the trapping of bubbles with an acquisition time of about one second and a spatial resolution of a few microns (pixel size of one micron). This allows us to extract the characteristics and reliable statistics about trapped bubbles inside the granular medium and to observe their local behavior. With this setup and technique we obtain access to the dynamics of foam trapping during the flow and the texture variations of the foam in the trapped zones. These local trapping events are well correlated with the macroscopical measurement of the pressure gradient over the cell.

Graphical abstract: Foam trapping in a 3D porous medium: in situ observations by ultra-fast X-ray microtomography

Back to tab navigation

Article information


Submitted
05 Mar 2020
Accepted
07 Jun 2020
First published
08 Jun 2020

Soft Matter, 2020, Advance Article
Article type
Paper

Foam trapping in a 3D porous medium: in situ observations by ultra-fast X-ray microtomography

R. Poryles, N. Gland, A. King, E. Rosenberg, L. Barré and T. Chevalier, Soft Matter, 2020, Advance Article , DOI: 10.1039/D0SM00392A

Social activity

Search articles by author

Spotlight

Advertisements