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

被引：3

作者：

Martini, Eduardo ^{[1
]}

Schmidt, Oliver ^{[2
]}

机构：

[1] Univ Poitiers, Inst Pprime, CNRS,ENSMA, Dept Fluides Therm Combust, 1 Bd Marie & Pierre Curie, F-86962 la Vienne, France

[2] Univ Calif San Diego, Dept Mech & Aerosp Engn, 9500 Gilman Dr, La Jolla, CA 92093 USA

来源：

THEORETICAL AND COMPUTATIONAL FLUID DYNAMICS | 2024年 / 38卷 / 05期

关键词：

Linear stability analysis; Resolvent analysis; Flow modelling; Transition to turbulence; FINITE-DIFFERENCE APPROXIMATIONS; CLOSED-LOOP CONTROL; LINEAR-STABILITY; ENERGY AMPLIFICATION; GLOBAL INSTABILITIES; ABSOLUTE INSTABILITY; ACOUSTIC MODES; FLUID-FLOWS; JET; DISTURBANCES;

D O I：

10.1007/s00162-024-00706-0

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

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.

引用

页码：665 / 685

页数：21

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