Stability of the interface in co-extrusion flow of two viscoelastic fluids through a pipe
- 1 February 1993
- journal article
- research article
- Published by Cambridge University Press (CUP) in Journal of Fluid Mechanics
- Vol. 247, 489-502
- https://doi.org/10.1017/s0022112093000539
Abstract
The linear stability of co-extrusion flow of two upper convected Maxwell fluids through a pipe at low Reynolds numbers is studied for arbitrary wavelength disturbances. The fluids interface can become unstable due to various mechanisms. It is shown that elasticity of the fluids can stabilize the capillary instability and a linearly stable interface can be achieved by appropriate choice of controlling parameters.Keywords
This publication has 20 references indexed in Scilit:
- The instability mechanism for two elastic liquids being co-extrudedJournal of Non-Newtonian Fluid Mechanics, 1992
- Elastic short wave instability in extrusion flows of viscoelastic liquidsJournal of Non-Newtonian Fluid Mechanics, 1992
- Interfacial instability due to elastic stratification in concentric coextrusion of two viscoelastic fluidsJournal of Non-Newtonian Fluid Mechanics, 1991
- Stability of the interface in two-layer couette flow of upper convected maxwell liquidsJournal of Non-Newtonian Fluid Mechanics, 1988
- Pseudo-spectral analysis of the stability of pressure-driven flow of a giesekus fluid between parallel planesJournal of Non-Newtonian Fluid Mechanics, 1987
- Stability of plane poiseuille and couette flow of a Maxwell fluidJournal of Non-Newtonian Fluid Mechanics, 1986
- Nonlinear analysis of the surface tension driven breakup of viscoelastic filamentsJournal of Non-Newtonian Fluid Mechanics, 1986
- Linear stability of plane couette flow of an upper convected maxwell fluidJournal of Non-Newtonian Fluid Mechanics, 1986
- Stability of plane poiseuille flow of a highly elastic liquidJournal of Non-Newtonian Fluid Mechanics, 1977
- On the stability of viscoelastic fluid flowRheologica Acta, 1970