Dynamical instabilities of two-fluid interfaces in a porous medium: A three-dimensional video imaging study
Soft Condensed Matter
2011-03-23 v1
Abstract
Two-fluid interfaces in porous media, an example of driven disordered systems, were studied by a real time three-dimensional imaging technique with pore scale resolution for a less viscous fluid displacing a more viscous one. With increasing flow rate the interface transforms from flat to fingers and thence to droplets for both drainage and imbibition. The results compare and contrast the effects of randomness, both physical (geometry of the pore space) and chemical (wettability of the fluids), on the dynamical instability and identify the origin of the pore-scale processes that govern them.
Keywords
Cite
@article{arxiv.1103.4234,
title = {Dynamical instabilities of two-fluid interfaces in a porous medium: A three-dimensional video imaging study},
author = {Prerna Sharma and P. Aswathi and Anit Sane and Shankar Ghosh and S. Bhattacharya},
journal= {arXiv preprint arXiv:1103.4234},
year = {2011}
}
Comments
Supplementary movies available at http://www.tifr.res.in/~softmatter/porous.html in mov format