Analytic solutions for the two-phase Navier-Stokes equations with surface tension and gravity

Details Analytic solutions for the two-phase Navier-Stokes equations with surface tension and gravity Analytic solutions for the two-phase Navier-Stokes equations with surface tension and gravity

2009-08-23

arxiv.org/abs/0908.3332v1

Mathematics

Analysis of PDEs

31 pages

Scientific paper

We consider the motion of two superposed immiscible, viscous, incompressible, capillary fluids that are separated by a sharp interface which needs to be determined as part of the problem. Allowing for gravity to act on the fluids, we prove local well-posedness of the problem. In particular, we obtain well-posedness for the case where the heavy fluid lies on top of the light one, that is, for the case where the Rayleigh-Taylor instability is present. Additionally we show that solutions become real analytic instantaneously.

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