Nonlinear elastic polymers in random flow
混沌动力学
2007-05-23 v2
摘要
Polymer stretching in random smooth flows is investigated within the framework of the FENE dumbbell model. The advecting flow is Gaussian and short-correlated in time. The stationary probability density function of polymer extension is derived exactly. The characteristic time needed for the system to attain the stationary regime is computed as a function of the Weissenberg number and the maximum length of polymers. The transient relaxation to the stationary regime is predicted to be exceptionally slow in the proximity of the coil-stretch transition.
引用
@article{arxiv.nlin/0504044,
title = {Nonlinear elastic polymers in random flow},
author = {M. Martins Afonso and D. Vincenzi},
journal= {arXiv preprint arXiv:nlin/0504044},
year = {2007}
}
备注
10 pages, to be published in J. Fluid Mech