On the steady compressible Navier-Stokes-Fourier system

Details On the steady compressible Navier-Stokes-Fourier system On the steady compressible Navier-Stokes-Fourier system

2007-09-21

arxiv.org/abs/0709.3443v1

Mathematics

Analysis of PDEs

Scientific paper

We study the motion of the steady compressible heat conducting viscous fluid in a bounded three dimensional domain governed by the compressible Navier-Stokes-Fourier system. Our main result is the existence of a weak solution to these equations for arbitrarily large data. A key element of the proof is a special approximation of the original system guaranteeing pointwise uniform boundedness of the density. Therefore the passage to the limit omits tedious technical tricks required by the standard theory. Basic estimates on the solutions are possible to obtain by a suitable choice of physically reasonable boundary conditions.

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