On numerical stability analysis of fluid flows in compliant pipes of elliptic cross-section

被引：2
|
作者：
Boiko, A. V. [1 ]
Demyanko, K. V. [2 ,3 ]
机构：
[1] ITAM SB RAS, Inst Str 4-1, Novosibirsk 630090, Russia
[2] INM RAS, Gubkin Str 8, Moscow 119333, Russia
[3] KIAM RAS, Miusskaya Sq 4, Moscow 125047, Russia
来源：
JOURNAL OF FLUIDS AND STRUCTURES | 2022年 / 108卷
基金：
俄罗斯科学基金会;
关键词：
Biglobal hydrodynamic stability; Linear critical Reynolds number; Poiseuille flow; Pipe of elliptic cross-section; Compliant coatings; 2D shell theory; SELF-EXCITED OSCILLATIONS; PLANE POISEUILLE FLOW; BOUNDARY-LAYER-FLOW; HYDRODYNAMIC STABILITY; TEMPORAL STABILITY; LINEAR INSTABILITY; CHANNEL FLOW; TUBE; ENERGETICS; SURFACES;
D O I：
10.1016/j.jfluidstructs.2021.103414
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The temporal linear stability of the Poiseuille flow in an infinite pipe of uniform elliptic cross-section with a compliant wall is numerically investigated in a broad range of the problem parameters. The pipe wall is modeled as a thin elastic shell, which can be surrounded by viscoelastic foundation; the latter is considered as a distributed set of springs and dampers. In particular, it is shown that the influence of the pipe cross-sectional aspect ratio on the flow stability is significant and nontrivial. An increase in the aspect ratio can enhance or suppress the growth of disturbances depending on both their streamwise wavenumber and the symmetry with respect to the cross-sectional axes. (C) 2021 Elsevier Ltd. All rights reserved.
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页数：34
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