Dynamical Slowdown of Polymers in Laminar and Random Flows

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dc.creatorCelani, Antonio
dc.creatorPuliafito, Alberto
dc.creatorVincenzi, Dario
dc.date2006-09-22
dc.date.accessioned2026-07-07T07:25:33Z
dc.date.available2026-07-07T07:25:33Z
dc.descriptionThe influence of an external flow on the relaxation dynamics of a single polymer is investigated theoretically and numerically. We show that a pronounced dynamical slowdown occurs in the vicinity of the coil-stretch transition, especially when the dependence on polymer conformation of the drag is accounted for. For the elongational flow, relaxation times are exceedingly larger than the Zimm relaxation time, resulting in the observation of conformation hysteresis. For random smooth flows hysteresis is not present. Yet, relaxation dynamics is significantly slowed down because of the large variety of accessible polymer configurations. The implications of these results for the modeling of dilute polymer solutions in turbulent flows are addressed.
dc.identifierhttps://arxiv.org/abs/nlin/0609055
dc.identifierhttp://arxiv.org/abs/nlin/0609055
dc.identifierPhysical Review Letters 97 (2006) 118301
dc.identifierdoi:10.1103/PhysRevLett.97.118301
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/116756
dc.subjectChaotic Dynamics
dc.subjectSoft Condensed Matter
dc.titleDynamical Slowdown of Polymers in Laminar and Random Flows
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