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arXiv · 0712.1090

A maximum principle for the Muskat problem for fluids with different densities

Diego Cordoba·Francisco Gancedo
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Abstract

We consider the fluid interface problem given by two incompressible fluids with different densities evolving by Darcy's law. This scenario is known as the Muskat problem for fluids with the same viscosities, being in two dimensions mathematically analogous to the two-phase Hele-Shaw cell. We prove in the stable case (the denser fluid is below) a maximum principle for the $L^\infty$ norm of the free boundary.

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Diego Cordoba, Francisco Gancedo. 2007-12-07. A maximum principle for the Muskat problem for fluids with different densities. https://doi.org/10.1007/s00220-008-0587-1

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