Purely Elastic Flow Asymmetries
- 18 October 2007
- journal article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 99 (16), 164503
- https://doi.org/10.1103/physrevlett.99.164503
Abstract
Using a numerical technique we demonstrate that the flow of the simplest differential viscoelastic fluid model (i.e., the upper-convected Maxwell model) goes through a bifurcation to a steady asymmetric state when flowing in a perfectly symmetric "cross-slot" geometry. We show that this asymmetry is purely elastic in nature and that the effect of inertia is a stabilizing one. Our results are in qualitative agreement with very recent experimental visualizations of a similar flow in the microfluidic apparatus of Arratia et al.Keywords
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