On the nonexistence of global weak solutions to the Navier-Stokes-Poisson equations in $\Bbb R^N$

Details On the nonexistence of global weak solutions to the Navier-Stokes-Poisson equations in $\Bbb R^N$ On the nonexistence of global weak solutions to the Navier-Stokes-Poisson equations in $\Bbb R^N$

2009-02-06

arxiv.org/abs/0902.1153v1

Mathematics

Analysis of PDEs

27 pages

Scientific paper

In this paper we prove nonexistence of stationary weak solutions to the Euler-Poisson equations and the Navier-Stokes-Poisson equations in $\Bbb R^N$, $N\geq 2$, under suitable assumptions of integrability for the density, velocity and the potential of the force field. For the time dependent Euler-Poisson equations we prove nonexistence result assuming additionally temporal asymptotic behavior near infinity of the second moment of density. For a class of time dependent Navier-Stokes-Poisson equations this asymptotic behavior of the density can be proved if we assume the standard energy inequality, and therefore the nonexistence of global weak solution follows from more plausible assumption in this case.

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