2006.193: Spatio-temporal oscillations and rheochaos in a simple model of shear banding
2006.193: S.M. Fielding and P.D. Olmsted (2004) Spatio-temporal oscillations and rheochaos in a simple model of shear banding. Physical Review Letters, 92 (084502). pp. 1-4. ISSN 0031-9007
Full text available as:
 | PDF - Archive staff only - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader 562 Kb |
DOI: 10.1103/PhysRevLett.92.084502
Abstract
We study a simple model of shear banding in which the flow-induced phase is destabilized by coupling between flow and microstructure (wormlike micellar length). By varying the strength of instability and the applied shear rate, we find a rich variety of oscillatory and chaotic shear banded flows. At low shear and weak instability, the induced phase pulsates next to one wall of the flow cell. For stronger instability, high shear pulses ricochet across the cell. At high shear we see oscillating bands on either side of central defects. We discuss our results in the context of recent experiments.
| Item Type: | Article |
|---|---|
| Subjects: | MSC 2000 > 76 Fluid mechanics MSC 2000 > 82 Statistical mechanics, structure of matter |
| MIMS number: | 2006.193 |
| Deposited By: | Miss Louise Stait |
| Deposited On: | 17 July 2006 |
Download Statistics: last 4 weeks
Repository Staff Only: edit this item