An experimental investigation of interfacial instabilities in multilayer flow of viscoelastic fluids. Part II. Elastic and nonlinear effects in incompatible polymer systems

1993 ◽  
Vol 37 (2) ◽  
pp. 315-339 ◽  
Author(s):  
Gregory M. Wilson ◽  
Bamin Khomami
Keyword(s):  
Experimental Investigation ◽  
Viscoelastic Fluids ◽  
Nonlinear Effects ◽  
Interfacial Instabilities ◽  
Polymer Systems

Experimental Investigation of the Development of Interfacial Instabilities in Two Layer Coextrusion Dies

2004 ◽  
Vol 19 (2) ◽  
pp. 118-128 ◽  
Author(s):  
R. Valette ◽  
P. Laure ◽  
Y. Demay ◽  
J.-F. Agassant
Keyword(s):  
Experimental Investigation ◽  
Interfacial Instabilities

An experimental investigation of heat transfer in thermally unstable polymer systems

2006 ◽  
Vol 44 (3) ◽  
pp. 463-470 ◽  
Author(s):  
D. V. Volosnikov ◽  
V. P. Efremov ◽  
P. V. Skripov ◽  
A. A. Starostin ◽  
A. V. Shishkin
Keyword(s):  
Heat Transfer ◽  
Experimental Investigation ◽  
Polymer Systems

Interfacial instabilities in plane Poiseuille flow of two stratified viscoelastic fluids with heat transfer. Part 1. Evolution equation and stability analysis

1995 ◽  
Vol 299 ◽  
pp. 241-265 ◽  
Author(s):  
Sang W. Joo
Keyword(s):  
Heat Transfer ◽  
Thermal Conductivity ◽  
Stability Analysis ◽  
Evolution Equation ◽  
Vertical Channel ◽  
Viscoelastic Fluids ◽  
Lubrication Approximation ◽  
Plane Poiseuille Flow ◽  
Interfacial Instabilities ◽  
Different Temperatures

An evolution equation is derived that describes the nonlinear development of the interface between two viscoelastic fluids flowing, under the action of imposed pressure gradient and gravity, in a vertical channel. The channel walls are kept at different temperatures, resulting in heat transfer across the layers. The equation, based on the lubrication approximation, models the effects of stratifications in density, viscosity, elasticity, shear thinning, and thermal conductivity. It also describes the capillary and thermocapillary effects, as well as the sensitivity of viscosities to temperature. Linear-stability analysis is performed based on the evolution equation to understand the competing effects of viscous, elastic, and Marangoni instabilities. Particular attention is paid to the active control of the interfacial instabilities through the thermocapillarity.

scholarly journals Interfacial instabilities of two-layer plane Poiseuille flows of viscoelastic fluids

2015 ◽  
Vol 343 (5-6) ◽  
pp. 354-359
Author(s):  
Nadia Mehidi ◽  
Nawel Amatousse ◽  
Abdelmalek Bedhouche
Keyword(s):  
Viscoelastic Fluids ◽  
Layer Plane ◽  
Interfacial Instabilities ◽  
Poiseuille Flows
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