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Nonlinear mechanical response of supercooled melts under applied forces

Cardenas, H. and Frahsa, Fabian and Fritschi, S. and Nicolas, A. and Papenkort, S. and Voigtmann, Th. and Fuchs, M. (2017) Nonlinear mechanical response of supercooled melts under applied forces. The European Physical Journal - Special Topics, 226, pp. 3039-3060. Springer. ISSN 1951-6355

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Official URL: https://link.springer.com/article/10.1140/epjst/e2017-70079-3

Abstract

We review recent progress on a microscopic theoretical approach to describe the nonlinear response of glass-forming colloidal dispersions under strong external forcing leading to homogeneous and inhomogeneous flow. Using mode-coupling theory (MCT), constitutive equations for the rheology of viscoelastic shear-thinning fluids are obtained. These are, in suitably simplified form, employed in continuum fluid dynamics, solved by a hybrid-Lattice Boltzmann (LB) algorithm that was developed to deal with long-lasting memory effects. The combined microscopic theoretical and mesoscopic numerical approach captures a number of phenomena far from equilibrium, including the yielding of metastable states, process-dependent mechanical properties, and inhomogeneous pressure-driven channel flow.

Item URL in elib:https://elib.dlr.de/114462/
Document Type:Article
Title:Nonlinear mechanical response of supercooled melts under applied forces
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Cardenas, H.heliana.cardenas (at) dlr.deUNSPECIFIED
Frahsa, Fabianuniversität konstanzUNSPECIFIED
Fritschi, S.universität konstanzUNSPECIFIED
Nicolas, A.UNSPECIFIEDUNSPECIFIED
Papenkort, S.simon.papenkort (at) dlr.deUNSPECIFIED
Voigtmann, Th.thomas.voigtmann (at) dlr.deUNSPECIFIED
Fuchs, M.universität konstanzUNSPECIFIED
Date:2017
Journal or Publication Title:The European Physical Journal - Special Topics
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:226
Page Range:pp. 3039-3060
Publisher:Springer
ISSN:1951-6355
Status:Published
Keywords:mode coupling theory, nonlinear rheology, computational fluid dynamics, nonlinear response
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):R - Vorhaben Materialdesign und neue Materialien
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Physics in Space
Deposited By: Voigtmann, Dr.rer.nat. Thomas
Deposited On:04 Oct 2017 09:59
Last Modified:06 Sep 2019 15:30

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