NDLI: Diagrammes de stabilité d'un écoulement coaxial de deux fluides viscoélastiques

Content Provider	Semantic Scholar
Author	Djessas, Houria Mehidi-Bouam, Nadia Amatousse, Nawel
Copyright Year	2017
Abstract	On this work, we will focus on the interfacial instability between two layer, incompressible viscoelastic fluids flowing concentrically in a straight circular tube. Equation which model the dynamics of the flow is obtained, the analyze adopted is based on a method of asymptotic expansion to solve the Navier-Stokes equations and the associated boundary conditions. This approach is valid for interfacial waves that are long compared to the thickness of the fluid layers. The long wave asymptotic analysis predicts accurately the behavior of the flow close to criticality. Results of our analysis, allow us to highlight the influence of various parameters of the problem on the critical Reynolds number. Mots clefs : Viscelastic fluids, axisymmetric flow, linear stability, interfacial instability, vertical cylinder, long wave instability.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://documents.irevues.inist.fr/bitstream/handle/2042/63235/130059.pdf?sequence=1
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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