TY  - JOUR
AU  - Huang, C.-C.
AU  - Sutmann, G.
AU  - Gompper, G.
AU  - Winkler, R.G.
TI  - Tumbling of polymers in semidilute solution under shear flow
JO  - epl
VL  - 93
SN  - 0295-5075
CY  - Les Ulis
PB  - EDP Sciences
M1  - PreJuSER-14657
SP  - 54004
PY  - 2011
N1  - 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.
AB  - 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
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000288322900009
DO  - DOI:10.1209/0295-5075/93/54004
UR  - https://juser.fz-juelich.de/record/14657
ER  -