Communications in Mathematical Physics

, Volume 257, Issue 2, pp 303–317 | Cite as

Dynamic Scaling in Miscible Viscous Fingering

Article

Abstract

We consider dynamic scaling in gravity driven miscible viscous fingering. We prove rigorous one-sided bounds on bulk transport and coarsening in regimes of physical interest. The analysis relies on comparison with solutions to one-dimensional conservation laws, and new scale-invariant estimates. Our bounds on the size of the mixing layer are of two kinds: a naive bound that is sharp in the absence of diffusion, and a more careful bound that accounts for diffusion as a selection criterion in the limit of vanishingly small diffusion. The naive bound is simple and robust, but does not yield the experimental speed of transport. In a reduced model derived by Wooding [20], we prove a sharp upper bound on the size of the mixing layer in accordance with his experiments. Wooding’s model also provides an example of a scalar conservation law where the entropy condition is not the physically appropriate selection criterion.

Keywords

Entropy Neural Network Statistical Physic Complex System Selection Criterion 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  1. 1.Division of Applied MathematicsBrown UniversityProvidenceUSA
  2. 2.Institute for Applied MathematicsUniversity of BonnBonnGermany

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