%0 Journal Article
%A Huang, C.-C.
%A Sutmann, G.
%A Gompper, G.
%A Winkler, R.G.
%T Tumbling of polymers in semidilute solution under shear flow
%J epl
%V 93
%@ 0295-5075
%C Les Ulis
%I EDP Sciences
%M PreJuSER-14657
%P 54004
%D 2011
%Z 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.
%X 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
%K J (WoSType)
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000288322900009
%R 10.1209/0295-5075/93/54004
%U https://juser.fz-juelich.de/record/14657