title: Three-dimensional real-time imaging of bi-phasic flow through porous media.
abstract: We present a scanning laser-sheet video imaging technique to image bi-phasic flow in three-dimensional porous media in real time with pore-scale spatial resolution, i.e., 35 μm and 500 μm for directions parallel and perpendicular to the flow, respectively. The technique is illustrated for the case of viscous fingering. Using suitable image processing protocols, both the morphology and the movement of the two-fluid interface, were quantitatively estimated. Furthermore, a macroscopic parameter such as the displacement efficiency obtained from a microscopic (pore-scale) analysis demonstrates the versatility and usefulness of the method.
authors: Department of Condensed Matter Physics and Materials Science, Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, India.
authors: Prerna
authors: P
authors: Sharma
authors: P
authors: P
authors: Aswathi
authors: Anit
authors: A
authors: Sane
authors: Shankar
authors: S
authors: Ghosh
authors: S
authors: S
authors: Bhattacharya