Neutron radiography of an anisotropic drainage flow

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

Abstract

Liquid drainage through foam is dominated by gravity, capillary, and viscous forces. The liquid is conducted by an isotropic network of Plateau borders; however, imposed stress changes the alignment of the foam's structural elements. Previous numerical simulations predicted that a vertical drainage flow will be deflected horizontally if the foam is sheared. We investigated this phenomenon by measuring the distribution of the liquid fraction within a foam formed in a flat rectangular cell. The foam was subjected to shear stress under a forced liquid supply from the top of the cell. Neutron radiographies of unchanged and sheared foam were analyzed to extract measurements of the liquid fraction. Deflections in the distribution of the drainage liquid were detected and found to be positively correlated with increasing foam shear.

Details

Original languageEnglish
Article number014609
Number of pages8
JournalPhysical Review E
Volume109
Issue number1
Publication statusPublished - 16 Jan 2024
Peer-reviewedYes

External IDs

PubMed 38366443
Scopus 85182737811
ORCID /0000-0002-2493-7629/work/168207378

Keywords

Keywords

  • Foam drainage, Rheology