Entropy-stable in- and outflow boundary conditions for the compressible Euler equations

IF 3.8 2区物理与天体物理 Q2 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS

Journal of Computational Physics Pub Date : 2024-10-30 DOI:10.1016/j.jcp.2024.113543

Magnus Svärd

引用次数: 0

Abstract

We propose general inflow and outflow boundary conditions for the Euler equations and prove that they are both linearly well-posed and lead to entropy-bounded solutions. Furthermore, we provide numerical boundary fluxes that enforce these boundary conditions and prove entropy stability for (entropy-stable) finite-volume schemes. The method is generalisable to most entropy-stable summation-by-parts schemes. Finally, we demonstrate their performance in various flow regimes using a second-order accurate entropy-stable finite-volume scheme.

查看原文本刊更多论文

可压缩欧拉方程的熵稳定流入和流出边界条件

我们提出了欧拉方程的一般流入和流出边界条件，并证明它们都是线性良好求解，并导致熵边界解。此外，我们还提供了执行这些边界条件的数值边界通量，并证明了（熵稳定）有限体积方案的熵稳定性。该方法可推广到大多数熵稳定的逐部求和方案。最后，我们使用二阶精确熵稳定有限体积方案演示了该方法在各种流动状态下的性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Computational Physics 物理-计算机：跨学科应用

CiteScore

7.60

自引率

14.60%

发文量

763

审稿时长

5.8 months

期刊介绍： Journal of Computational Physics thoroughly treats the computational aspects of physical problems, presenting techniques for the numerical solution of mathematical equations arising in all areas of physics. The journal seeks to emphasize methods that cross disciplinary boundaries. The Journal of Computational Physics also publishes short notes of 4 pages or less (including figures, tables, and references but excluding title pages). Letters to the Editor commenting on articles already published in this Journal will also be considered. Neither notes nor letters should have an abstract.