Wrinkling of stable fronts in viscous flow

Itzhak Webman and David A. Kessler

Physica A: Statistical Mechanics and its Applications, 1998, vol. 249, issue 1, 96-102

Abstract: Stable wrinkled fronts were often observed in experiments on fluid invasion into porous media, when the invaded phase is less viscous than the invading one. Recent experiments by a group at the Weizmann institute, show that capillary wetting of paper may also lead to rough self-affine fronts. A dominant factor controlling the interface roughening in these systems is the nature of the two-dimensional viscous fluid flow in the medium behind it. Since the disorder in the medium modifies this flow, it also determines the roughness of the interface. We present a theoretical analysis of the connection between the nature of randomness in the medium and the resulting roughness of the fronts.

Date: 1998
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:249:y:1998:i:1:p:96-102

DOI: 10.1016/S0378-4371(97)00436-6

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