Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2007-03-21
Physics
Condensed Matter
Soft Condensed Matter
12 pages
Scientific paper
This work deals with the evaluation of the flow curve of colloidal systems that develop fluid phases with different mechanical properties, namely shear-banding fluids. The problem involved is that, as different fluid phases coexist in the flow domain of the rheometric cell, measured data cannot be directly converted into rheometric functions. In order to handle this problem, a shear stress vs. shear rate constitutive relation is introduced to interpret the steady state flow curves. The relation derives from a phenomenological description of structural changes, and involves the possibility of multivalued shear rates under a given shear stress. Numerical predictions satisfactorily match up to experimental data of wormlike micellar solutions. A crucial aspect is the adequate computation of the shear rate function from raw data measured in the rheometric cell.
Berli Claudio L. A.
Quemada Daniel
No associations
LandOfFree
On the Flow Curve of Colloids Presenting Shear-Induced Phase Transitions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with On the Flow Curve of Colloids Presenting Shear-Induced Phase Transitions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the Flow Curve of Colloids Presenting Shear-Induced Phase Transitions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-167936