Abstract
The rheology of aqueous HPG solutions in the range 100 wppm to 5000 wppm is investigated. The flow through a porous medium and turbulent tube flow, respectively, of these solutions is studied as well. Especially with respect to the higher concentrations, the data correlate nicely only after the effect of shear is extracted, i.e., after the variable viscosity is taken into account. This is accomplished by working with an apparent viscosity η c , defined such that, the Hagen Poiseuille law (with η c ) holds in laminar tube flow.
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Chakrabarti, S., Seidl, B., Vorwerk, J. et al. The rheology of Hydroxy-propylguar (HPG) solutions and its influence on the flow through a porous medium and turbulent tube flow, respectively (Part 1). Rheola Acta 30, 114–123 (1991). https://doi.org/10.1007/BF01134600
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DOI: https://doi.org/10.1007/BF01134600