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arXiv 2010.03339math.AP
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定常可压缩Navier-Stokes-Fourier流

Compressible Navier-Stokes-Fourier flows at steady-state

Luisa Consiglieri

摘要:

热传导可压缩粘性流动由Navier-Stokes-Fourier(NSF)系统控制。在本文中,我们研究的NSF系统完成的牛顿冷却定律的边界处的传热。在边界的一部分,我们考虑了Navier滑移边界条件,而在其余部分的入口和出口发生。通过一个新的不动点证明了该方程的弱解的存在性。利用这种新方法,借助于具有\(q>n\)的\(L^q\) -Neumann问题,弱可解性在Lipschitz域上是可能的,从而标准的存在性结果可以应用于辅助问题,并通过紧性技巧得到结论.建立了定量估计。

英文摘要:

The heat conducting compressible viscous flows are governed by the Navier-Stokes-Fourier (NSF) system. In this paper, we study the NSF system accomplished by the Newton law of cooling for the heat transfer at the boundary. On one part of the boundary, we consider the Navier slip boundary condition, while in the remaining part the inlet and outlet occur. The existence of a weak solution is proved via a new fixed point argument. With this new approach, the weak solvability is possible in Lipschitz domains, by making recourse to \(L^q\)-Neumann problems with \(q>n\).Thus, standard existence results can be applied to auxiliary problems and the claim follows by compactness techniques. Quantitative estimates are established.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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