可压缩欧拉方程组的熵稳定有限差分格式
Entropy Stable Finite Difference Schemes for Compressible Euler Equations
DOI: 10.12677/AAM.2022.119669, PDF,    科研立项经费支持
作者: 周翔宇, 张志壮, 高金梅, 钱守国*, 李 刚*:青岛大学,数学与统计学院,山东 青岛
关键词: 熵守恒熵稳定熵不等式欧拉方程组Entropy Conservation Entropy Stability Entropy Inequality Euler Equations
摘要: 在本文研究中,我们针对流体力学中的可压缩欧拉方程组,以熵守恒数值通量为基础,并在此基础上通过添加数值粘性的方式,建立了熵稳定数值通量,以满足熵不等式,最终得到了熵稳定有限差分格式。严格的理论分析以及广泛的数值结果均验证了本格式保持高分辨率和无伪振荡的良好特性。我们相信该方法在流体力学领域会有着相当广泛的应用前景。
Abstract: In this article, we aim at the compressible Euler equations model in fluid mechanics, based on the entropy conservation numerical flux, and on this basis, by adding numerical viscosity, we achieve the satisfaction of entropy inequality, and establish the entropy stable numerical flux. Rigorous theoretical analysis and extensive numerical results verify the good characteristics of this method to maintain high resolution and no pseudo oscillation. We believe that this method will have a wide application prospect in the field of fluid mechanics.
文章引用:周翔宇, 张志壮, 高金梅, 钱守国, 李刚. 可压缩欧拉方程组的熵稳定有限差分格式[J]. 应用数学进展, 2022, 11(9): 6331-6341. https://doi.org/10.12677/AAM.2022.119669

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