On Formation of Singularity of Spherically Symmetric Nonbarotropic Flows
arXiv:1501.00109 · doi:10.1088/0004-6256/150/1/1
Abstract
We study an initial boundary value problem on a ball for the heat-conductive system of compressible Navier-Stokes-Fourier equations, in particular, a criterion of breakdown of the classical solution. For smooth initial data away from vacuum, it is proved that the classical solution which is spherically symmetric loses its regularity in a finite time if and only if the {\bf density} {\it concentrates} or {\it vanishes} or the {\bf velocity} becomes unbounded around the center. One possible situation is that a vacuum ball appears around the center and the density may concentrate on the boundary of the vacuum ball simultaneously.
arXiv comment14 pages in Kyoto. J. Math. 2015
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