论文标题

替代Navier-Stokes系统的分析:弱熵解决方案和收敛的数值方案

Analysis of an alternative Navier-Stokes system: Weak entropy solutions and a convergent numerical scheme

论文作者

Svärd, Magnus

论文摘要

我们认为最初在\ cite {svard18}中提出的可压缩粘性理想气体的替代性纳维尔 - 斯托克斯模型。我们得出了足够强的先验估计值,可以支持系统的弱熵解决方案。在这些估计值的指导下,我们提出了一个有限的体积方案,得出类似的估计,并证明了向弱熵溶液的网格收敛。此外,这种存在证明对于“大”初始数据有效,并且不需要对解决方案的先验假设。

We consider an alternative Navier-Stokes model for compressible viscous ideal gases, originally proposed in \cite{Svard18}. We derive a priori estimates that are sufficiently strong to support a weak entropy solution of the system. Guided by these estimates, we propose a finite volume scheme, derive the analogous estimates and demonstrate grid convergence towards a weak entropy solution. Furthermore, this existence proof is valid for "large" initial data and no a priori assumptions on the solution are needed.

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