Anomalous interface roughening in porous media: Experiment and model
- 1 June 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 45 (12), R8313-R8316
- https://doi.org/10.1103/physreva.45.r8313
Abstract
We report measurements of the interface formed when a wet front propagates in paper by imbibition and we find anomalous roughening with exponent α=0.63±0.04. We also formulate an imbibition model that agrees with the experimental morphology. The main ingredient of the model is the propagation and pinning of a self-affine interface in the presence of quenched disorder, with erosion of overhangs. By relating our model to directed percolation, we find α≃0.63.Keywords
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