Brownian dynamics of polymers at high strain rates

D. Kivotides; T. G. Theofanous

doi:10.1063/1.2964582

Brownian dynamics of polymers at high strain rates

D. Kivotides^*, T. G. Theofanous

^*Corresponding author for this work

Chemical And Process Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

Abstract

We tackle the problem of viscoelastic break-up in high speed flow by employing a mesoscopic bead-spring model for the polymer chains, and by performing Brownian dynamics computations for a variety of extensional flows with high strain rates. The results inform about the level of elastic stresses during elongation, and allow inferences about the scaling of the necking process during rupture. Moreover, the findings clarify the mechanism of chain stretching, informing about the times required for full extension and the role of polymer geometry during elongation.

Original language	English
Title of host publication	AIP Conference Proceedings
Pages	1384-1386
Number of pages	3
Volume	1027
DOIs	https://doi.org/10.1063/1.2964582
Publication status	Published - 7 Jul 2008
Event	15th International Congress on Rheology - Monterey, CA, United States Duration: 3 Aug 2008 → 8 Aug 2008

Conference

Conference	15th International Congress on Rheology
Country/Territory	United States
City	Monterey, CA
Period	3/08/08 → 8/08/08

Keywords

bead-spring model
Brownian dynamics
dilute polymeric flows
extensional rheology
high strain rates
Viscoelastic fluid break-up

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10.1063/1.2964582

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abstract = "We tackle the problem of viscoelastic break-up in high speed flow by employing a mesoscopic bead-spring model for the polymer chains, and by performing Brownian dynamics computations for a variety of extensional flows with high strain rates. The results inform about the level of elastic stresses during elongation, and allow inferences about the scaling of the necking process during rupture. Moreover, the findings clarify the mechanism of chain stretching, informing about the times required for full extension and the role of polymer geometry during elongation.",

keywords = "bead-spring model, Brownian dynamics, dilute polymeric flows, extensional rheology, high strain rates, Viscoelastic fluid break-up",

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AU - Theofanous, T. G.

PY - 2008/7/7

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N2 - We tackle the problem of viscoelastic break-up in high speed flow by employing a mesoscopic bead-spring model for the polymer chains, and by performing Brownian dynamics computations for a variety of extensional flows with high strain rates. The results inform about the level of elastic stresses during elongation, and allow inferences about the scaling of the necking process during rupture. Moreover, the findings clarify the mechanism of chain stretching, informing about the times required for full extension and the role of polymer geometry during elongation.

AB - We tackle the problem of viscoelastic break-up in high speed flow by employing a mesoscopic bead-spring model for the polymer chains, and by performing Brownian dynamics computations for a variety of extensional flows with high strain rates. The results inform about the level of elastic stresses during elongation, and allow inferences about the scaling of the necking process during rupture. Moreover, the findings clarify the mechanism of chain stretching, informing about the times required for full extension and the role of polymer geometry during elongation.

KW - bead-spring model

KW - Brownian dynamics

KW - dilute polymeric flows

KW - extensional rheology

KW - high strain rates

KW - Viscoelastic fluid break-up

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M3 - Conference contribution book

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EP - 1386

BT - AIP Conference Proceedings

T2 - 15th International Congress on Rheology

Y2 - 3 August 2008 through 8 August 2008

ER -

Brownian dynamics of polymers at high strain rates

Abstract

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Keywords

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