Linstab2D：在 MATLAB 中对可压缩粘性流进行稳定性和解析分析

IF 2.2 3区工程技术 Q2 MECHANICS

Theoretical and Computational Fluid Dynamics Pub Date : 2024-08-13 DOI:10.1007/s00162-024-00706-0

Eduardo Martini, Oliver Schmidt

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引用次数: 0

摘要

我们介绍了 LinStab2D，这是一种易于使用的线性稳定性分析 MATLAB 工具，能够处理复杂域、执行时间和空间线性稳定性以及解析量分析。我们介绍了代码的理论基础，包括线性稳定性和解析分析框架、有限差分离散化方案和 Floquet 解析。这些概念在五个不同的示例中进行了探讨，突出并说明了不同的代码功能，包括网格遮蔽、映射、施加边界约束以及使用笛卡尔坐标或轴对称坐标进行周期性流动分析。这些示例是研究其他流动的出发点。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Linstab2D: stability and resolvent analysis of compressible viscous flows in MATLAB

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Linstab2D: stability and resolvent analysis of compressible viscous flows in MATLAB

We present LinStab2D, an easy-to-use linear stability analysis MATLAB tool capable of handling complex domains, performing temporal and spatial linear stability, and resolvent analysis. We present the theoretical foundations of the code, including the linear stability and resolvent analysis frameworks, finite differences discretization schemes, and the Floquet ansatz. These concepts are explored in five different examples, highlighting and illustrating the different code capabilities, including mesh masking, mapping, imposition of boundary constraints, and the analysis of periodic flows using Cartesian or axisymmetric coordinates. These examples were constructed to be a departure point for studying other flows.

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来源期刊

Theoretical and Computational Fluid Dynamics 物理-力学

CiteScore

5.80

自引率

2.90%

发文量

审稿时长

>12 weeks

期刊介绍： Theoretical and Computational Fluid Dynamics provides a forum for the cross fertilization of ideas, tools and techniques across all disciplines in which fluid flow plays a role. The focus is on aspects of fluid dynamics where theory and computation are used to provide insights and data upon which solid physical understanding is revealed. We seek research papers, invited review articles, brief communications, letters and comments addressing flow phenomena of relevance to aeronautical, geophysical, environmental, material, mechanical and life sciences. Papers of a purely algorithmic, experimental or engineering application nature, and papers without significant new physical insights, are outside the scope of this journal. For computational work, authors are responsible for ensuring that any artifacts of discretization and/or implementation are sufficiently controlled such that the numerical results unambiguously support the conclusions drawn. Where appropriate, and to the extent possible, such papers should either include or reference supporting documentation in the form of verification and validation studies.