Flow instabilities in complex fluids: Nonlinear rheology and slow relaxations
Condensed Matter
2009-11-10 v1
Abstract
We here present two simplified models aimed at describing the long-term, irregular behaviours observed in the rheological response of certain complex fluids, such as periodic oscillations or chaotic-like variations. Both models exploit the idea of having a (non-linear) rheological equation, controlling the temporal evolution of the stress, where one of the participating variables (a "structural" variable) is subject to a distinct dynamics with a different relaxation time. The coupling between the two dynamics is a source of instability.
Cite
@article{arxiv.cond-mat/0310660,
title = {Flow instabilities in complex fluids: Nonlinear rheology and slow relaxations},
author = {A. Aradian and M. E. Cates},
journal= {arXiv preprint arXiv:cond-mat/0310660},
year = {2009}
}
Comments
Proceedings of "Slow Dynamics in Complex Systems 2003" (Sendai, Japan, Nov. 2003)