Abstract
The general problem of viscous flow of an arbitrary time-independent non-Newtonian fluid through packed beds and porous media is examined. The Blake-Kozeny capillary model, utilizing general relationships describing flow in straight ducts of arbitrary cross-sectional shape, has yielded a general relationship involving the non-Newtonian or apparent viscosity of the fluid and the impermeability factor plus an additional aspect factor characteristic of the bed, which satisfactorily correlates the available experimental data. The authors' experimental data and data obtained in an independent study by Sadowski with high molecular weight Natrosol-250 H aqueous solutions was successfully correlated by allowing for the existence of an anisotropic anomalous layer on the surface of the particles. The negative effective velocity on the surface computed from the data suggests polymer adsorption-gel formation at the surface, also observed physically by Sadowski. Estimated thickness of the anomalous layer are presented.
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