Flow non-normality-induced transient growth in superposed Newtonian and non-Newtonian fluid layers.
Phys Rev E Stat Nonlin Soft Matter Phys
; 80(3 Pt 2): 036312, 2009 Sep.
Article
en En
| MEDLINE
| ID: mdl-19905217
ABSTRACT
In recent years non-normality and transient growths have attracted much interest in fluid mechanics. Here, we investigate these topics with reference to the problem of interfacial instability in superposed Newtonian and non-Newtonian fluid layers. Under the hypothesis of the lubrication theory, we demonstrate the existence of significant transient growths in the parameter space region where the dynamical system is asymptotically stable, and show how they depend on the main physical parameters. In particular, the key role of the density ratio is highlighted.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Reología
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Soluciones
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Dinámicas no Lineales
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Modelos Teóricos
Idioma:
En
Revista:
Phys Rev E Stat Nonlin Soft Matter Phys
Asunto de la revista:
BIOFISICA
/
FISIOLOGIA
Año:
2009
Tipo del documento:
Article
País de afiliación:
Italia