000014657 001__ 14657 000014657 005__ 20240610120454.0 000014657 0247_ $$2DOI$$a10.1209/0295-5075/93/54004 000014657 0247_ $$2WOS$$aWOS:000288322900009 000014657 0247_ $$2ISSN$$a0295-5075 000014657 0247_ $$2Handle$$a2128/22961 000014657 037__ $$aPreJuSER-14657 000014657 041__ $$aeng 000014657 082__ $$a530 000014657 084__ $$2WoS$$aPhysics, Multidisciplinary 000014657 1001_ $$0P:(DE-Juel1)VDB97976$$aHuang, C.-C.$$b0$$uFZJ 000014657 245__ $$aTumbling of polymers in semidilute solution under shear flow 000014657 260__ $$aLes Ulis$$bEDP Sciences$$c2011 000014657 300__ $$a54004 000014657 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article 000014657 3367_ $$2DataCite$$aOutput Types/Journal article 000014657 3367_ $$00$$2EndNote$$aJournal Article 000014657 3367_ $$2BibTeX$$aARTICLE 000014657 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000014657 3367_ $$2DRIVER$$aarticle 000014657 440_0 $$01996$$aEurophysics Letters$$v93$$x0295-5075$$y5 000014657 500__ $$aFinancial 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. 000014657 520__ $$aThe 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. 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