Numerical simulation of the transient flow of branched polymer melts through a planar contraction using the 'pom-pom' model

G. B. Bishko; O. G. Harlen; T. C.B. McLeish; T. M. Nicholson

doi:10.1016/S0377-0257(98)00165-7

Numerical simulation of the transient flow of branched polymer melts through a planar contraction using the 'pom-pom' model

G. B. Bishko, O. G. Harlen^*, T. C.B. McLeish, T. M. Nicholson

^*Corresponding author for this work

Physics

Research output: Contribution to journal › Conference article › peer-review

Abstract

Calculations of the transient flow of branched polymer melts through a planar 4 : 1 contraction and along a channel are presented. The polymer is modelled as a monodisperse suspension of 'pom-pom' molecules using the constitutive equation developed by McLeish and Larson [T.C.B. McLeish, R.G. Larson, J. Rheol. 42 (1998) 81-110], which provides a direct link between the molecular topology and the flow properties of the melt. The branching produces an enhancement in the size of the upstream vortex, similar to that observed experimentally with branched polymer melts. The effect arises from the widely differing responses in shear and extensional flow, and is predicted to be sensitive to time, degree of branching and Weissenberg number.

Original language	English
Pages (from-to)	255-273
Number of pages	19
Journal	Journal of Non-Newtonian Fluid Mechanics
Volume	82
Issue number	2-3
DOIs	https://doi.org/10.1016/S0377-0257(98)00165-7
Publication status	Published - 1 May 1999
Event	Proceedings of the 1998 IUTAM Symposium on Viscoelastic Fluid Mechanics:Effects of Molecular Modelling - Stanford, CA, USA Duration: 21 Jun 1998 → 25 Jun 1998

Access to Document

10.1016/S0377-0257(98)00165-7

Cite this

@article{aeeed1968b5b45afaa0d7fb6c0ea5f7c,

title = "Numerical simulation of the transient flow of branched polymer melts through a planar contraction using the 'pom-pom' model",

abstract = "Calculations of the transient flow of branched polymer melts through a planar 4 : 1 contraction and along a channel are presented. The polymer is modelled as a monodisperse suspension of 'pom-pom' molecules using the constitutive equation developed by McLeish and Larson [T.C.B. McLeish, R.G. Larson, J. Rheol. 42 (1998) 81-110], which provides a direct link between the molecular topology and the flow properties of the melt. The branching produces an enhancement in the size of the upstream vortex, similar to that observed experimentally with branched polymer melts. The effect arises from the widely differing responses in shear and extensional flow, and is predicted to be sensitive to time, degree of branching and Weissenberg number.",

author = "Bishko, {G. B.} and Harlen, {O. G.} and McLeish, {T. C.B.} and Nicholson, {T. M.}",

year = "1999",

month = may,

day = "1",

doi = "10.1016/S0377-0257(98)00165-7",

language = "English",

volume = "82",

pages = "255--273",

journal = "Journal of Non-Newtonian Fluid Mechanics",

issn = "0377-0257",

publisher = "Elsevier",

number = "2-3",

note = "Proceedings of the 1998 IUTAM Symposium on Viscoelastic Fluid Mechanics:Effects of Molecular Modelling ; Conference date: 21-06-1998 Through 25-06-1998",

}

TY - JOUR

T1 - Numerical simulation of the transient flow of branched polymer melts through a planar contraction using the 'pom-pom' model

AU - Bishko, G. B.

AU - Harlen, O. G.

AU - McLeish, T. C.B.

AU - Nicholson, T. M.

PY - 1999/5/1

Y1 - 1999/5/1

N2 - Calculations of the transient flow of branched polymer melts through a planar 4 : 1 contraction and along a channel are presented. The polymer is modelled as a monodisperse suspension of 'pom-pom' molecules using the constitutive equation developed by McLeish and Larson [T.C.B. McLeish, R.G. Larson, J. Rheol. 42 (1998) 81-110], which provides a direct link between the molecular topology and the flow properties of the melt. The branching produces an enhancement in the size of the upstream vortex, similar to that observed experimentally with branched polymer melts. The effect arises from the widely differing responses in shear and extensional flow, and is predicted to be sensitive to time, degree of branching and Weissenberg number.

AB - Calculations of the transient flow of branched polymer melts through a planar 4 : 1 contraction and along a channel are presented. The polymer is modelled as a monodisperse suspension of 'pom-pom' molecules using the constitutive equation developed by McLeish and Larson [T.C.B. McLeish, R.G. Larson, J. Rheol. 42 (1998) 81-110], which provides a direct link between the molecular topology and the flow properties of the melt. The branching produces an enhancement in the size of the upstream vortex, similar to that observed experimentally with branched polymer melts. The effect arises from the widely differing responses in shear and extensional flow, and is predicted to be sensitive to time, degree of branching and Weissenberg number.

UR - http://www.scopus.com/inward/record.url?scp=0033133822&partnerID=8YFLogxK

U2 - 10.1016/S0377-0257(98)00165-7

DO - 10.1016/S0377-0257(98)00165-7

M3 - Conference article

AN - SCOPUS:0033133822

SN - 0377-0257

VL - 82

SP - 255

EP - 273

JO - Journal of Non-Newtonian Fluid Mechanics

JF - Journal of Non-Newtonian Fluid Mechanics

IS - 2-3

T2 - Proceedings of the 1998 IUTAM Symposium on Viscoelastic Fluid Mechanics:Effects of Molecular Modelling

Y2 - 21 June 1998 through 25 June 1998

ER -

Numerical simulation of the transient flow of branched polymer melts through a planar contraction using the 'pom-pom' model

Abstract

Access to Document

Other files and links

Cite this