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- Title
HYBRID RHEOLOGICAL MODEL FOR NON-NEWTONIAN TURBULENT PIPE FLOW.
- Authors
Wilson, K. C.; Thomas, A. D.
- Abstract
Many slurry rheograms do not follow the Bingham model, but are curved (convex upwards) at low-strain rates. Alternate models such as the yield-power law (YPL), provide a good fit to the low-strain rate data, but they tend to underestimate apparent viscosities at high-strain rates. The current paper considers a hybrid rheological model consisting of a cubic-spline fit to the low-strain rate data merging into a Bingham linear model above a limiting strain rate. This model predicts turbulent flow well, depending only on the area difference between the Bingham rheogram and the cubic spline.
- Subjects
RHEOLOGY; NON-Newtonian fluids; VISCOUS flow; TURBULENCE; FLUID dynamics
- Publication
Canadian Journal of Chemical Engineering, 2010, Vol 88, Issue 2, p179
- ISSN
0008-4034
- Publication type
Article
- DOI
10.1002/cjce.20267