Structured Pseudospectra in Problems of Spatial Stability of Boundary Layers

被引：0
|
作者：
Demyanko, K. V. [1 ,2 ]
Nechepurenko, Yu. M. [1 ,2 ]
Zasko, G. V. [1 ,2 ]
机构：
[1] Russian Acad Sci, Marchuk Inst Numer Math, Moscow 119333, Russia
[2] Russian Acad Sci, Keldysh Inst Appl Math, Moscow 125047, Russia
来源：
COMPUTATIONAL MATHEMATICS AND MATHEMATICAL PHYSICS | 2024年 / 64卷 / 08期
基金：
俄罗斯科学基金会;
关键词：
structured pseudospectra; resolvent; spatial stability; boundary layer; G & ouml; rtler vortices; Tollmien-Schlichting waves; SPECTRAL METHODS; DICHOTOMY; DISTURBANCES;
D O I：
10.1134/S0965542524700957
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
This work is devoted to a numerical analysis of the sensitivity of the spatial stability characteristics of boundary layers to uncertainties of the main flow. It is proposed to use structured pseudospectra for this purpose. It is shown that the obtained estimates are much more accurate than estimates based on an unstructured pseudospectrum. The presentation is based on an example of the flow of a viscous incompressible fluid over a slightly concave surface with flow parameters favorable for the development of the G & ouml;rtler vortices and Tollmien-Schlichting waves.
引用
收藏
页码：1785 / 1795
页数：11
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