This paper deals with the flow behaviour of Newtonian and non-Newtonian fluids flowing through packed and expanded beds. With the help of tube-bundle theory a generalized average shear-stress-shear-rate relationship is derived and found to predict the flow behaviour of power law as wel1 as non-power
Newtonian and Non-Newtonian Low Re Number Flow Through Bead Packings
β Scribed by D. Mertens; C. Heinen; E. H. Hardy; H. W. Buggisch
- Publisher
- John Wiley and Sons
- Year
- 2006
- Tongue
- English
- Weight
- 213 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0930-7516
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β¦ Synopsis
Abstract
The results of measurements of velocity distributions of Newtonian and nonβNewtonian fluids flowing through porous media are described in this contribution. The porous matrix was modeled by glass beads of different diameters forming a random bead packing confined by a circular tube. These packings were passed through by aqueous solutions of glucose and xanthane gum. Nuclear magnetic resonance (NMR) methods were applied to investigate the flow field in the packing. Spatially resolved and integral displacement distribution measurements were reported.
π SIMILAR VOLUMES
An experimental investigation was carried out to determine the effects of gas and liquid flow rates and flow consistency index on the liquid-phase axial dispersion coefficient, pressure drop and the liquid holdup for two-phase downflow and upflow in a fixed bed. Water and non-Newtonian liquids were
The equations of motion (continuity and momentum) describing the steady flow of incompressible power law liquids in a model porous medium consisting of an assemblage of long cylinders have been solved numerically using the finite difference method. The field equations as well as the pertinent bounda