Journal Article

PreJuSER-14657

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Tumbling of polymers in semidilute solution under shear flow

Huang, C.-C.FZJ* ; Sutmann, G.FZJ* ; Gompper, G.FZJ* ; Winkler, R. G.FZJ*

2011
EDP Sciences Les Ulis

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Please use a persistent id in citations: http://hdl.handle.net/2128/22961  doi:10.1209/0295-5075/93/54004

Abstract: The tumbling dynamics of individual polymers in semidilute solution is studied by large-scale non-equilibrium mesoscale hydrodynamic simulations. We find that the tumbling time is equal to the non-equilibrium relaxation time of the polymer end-to-end distance along the flow direction and strongly depends on concentration. In addition, the normalized tumbling frequency as well as the widths of the alignment distribution functions for a given concentration-dependent Weissenberg number exhibit a weak concentration dependence in the cross-over regime from a dilute to a semidilute solution. For semidilute solutions a universal behavior is obtained. This is a consequence of screening of hydrodynamic interactions at polymer concentrations exceeding the overlap concentration. Copyright (c) EPLA, 2011

Keyword(s): J

Note: Financial support by the Deutsche Forschungsgemeinschaft within SFB TR6 is gratefully acknowledged. We are grateful to the Julich Supercomputer Centre (JSC) for allocation of a special CPU-time grant.

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Contributing Institute(s):

1. Theorie der weichen Materie und Biophysik (ICS-2)
2. Theorie der Weichen Materie und Biophysik (IAS-2)
3. Jülich Supercomputing Centre (JSC)

Research Program(s):

1. BioSoft: Makromolekulare Systeme und biologische Informationsverarbeitung (FUEK505) (FUEK505)
2. Scientific Computing (FUEK411) (FUEK411)
3. 411 - Computational Science and Mathematical Methods (POF2-411) (POF2-411)

Appears in the scientific report 2011

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Database coverage:
; JCR ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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