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Flow Instability Publications

H Ovaici, MR Mackley, GH McKinley and S J Crook.
The experimental observation and modelling of an "Ovaici" necklace and stick-spurt instability arising during the cold extrusion of chocolate.
Journal of Rheology, 42, 1, 125-158 (1998)

MR Mackley, RPG Rutgers and DG Gilbert.
Surface instabilities during the extrusion of linear low density polyethylene.
Journal of Non-Newtonian Fluid Mechanics, 76, 281-297 (1998)

MR Mackley and R Rutgers.
Capillary Rheometry.
Rheological Measurement, Ed 2, By A.A.Colyer and D.W.Clegg. Chapman Hall 167 - 188 (1999)

M Ranganthan, MR Mackley and PHJ Spittler.
Experimental observations and modelling of time dependent capillary flow for a high density polyethylene using a multipass rheometer.
J. Rheology, 43(2), 443-451 (1999)

RPG Rutgers, MR Mackley, LE Rodd and A Bernnat
Die gap geometry and wall boundary condition effects on the formation of extrusion surface instabilities for polyethylene melts.
Proc X111 Int Cong Rheology, Cambridge, Ed DM Binding, NE Hudson, J Mewis, JM Piau, CJS Petrie, P Townsend and M Wagner, Vol 3, 179-181 (2000)

R Liang and MR Mackley
The gas assisted extrusion of molten polyethylene
Journal of Rheology, In press

K Lee and MR Mackley
The importance of slip in matching polyethylene processing data with numerical simulation.
Journal of Non-Newtonian Fluid Mechanics, 94, 159-177 (2000)

R Rutgers and MR Mackley
The correlation of experimental surface extrusion instabilities with numerically predicted exit surface stress concentrations and melt strength for linear low density polyethylene.
Journal of Rheology, 44(6), 1319-1334 (2000)

RPG Rutgers and MR Mackley
The effect of channel geometry and wall boundary conditions on the formation of extrusion surface instabilities for LLDPE.
Journal of Non-Newtonian Fluid Mechanics, 98, 185-199 (2001)

DR Arda and MR Mackley
The Effect of Die Exit Curvature, Die Surface Roughness and a Fluoropolymer Additive on Sharkskin Extrusion Instabilities in Polyethylene Processing
Journal of Non Newtonian Fluid Mechanics 126, 47-61 (2005)

DR Arda and MR Mackley
Sharkskin instabilities and the effect of slip from gas-assisted extrusion
Rheol. Acta 44(4), 352-359 (2005)

MW Collis and MR Mackley
The melt processing of monodisperse and polydisperse polystyrene melts within a slit entry and exit flow
J. Non-Newtonian Fluid Mech. 128, 29-41 (2005)

J-F Agassant, DR Arda, C Combeaud, A Merten, H Muenstedt, MR Mackley, L Robert and B Vergnes.
Polymer processing extrusion instabilities and methods for their elimination or minimisation.
Journal of International Polymer Processing, V3, 239-255 (2006)


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