Journal
RHEOLOGICA ACTA
Volume 49, Issue 10, Pages 1003-1013Publisher
SPRINGER
DOI: 10.1007/s00397-010-0470-9
Keywords
Rheo-NMR; Wormlike micelles; Shear banding; Slip
Categories
Funding
- Marsden fund
- Natural Sciences and Engineering Research Council of Canada
Ask authors/readers for more resources
The strain-controlled flow of a wormlike micellar solution in cylindrical Couette geometries with smooth and rough glass inner walls is investigated using 2D H-1 NMR velocimetry. We find anomalous shear banding in which fluctuating slip dynamics in combination with surfactant properties lead to a non-lever rule behaviour where the interface position remains constant while the high and low shear rates change. Velocities in the flow direction are imaged in the flow-gradient/vorticity plane. The spatiotemporal resolution achieved reveals fluctuations in flow structure along the vorticity axis and instability of the high shear band.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available