A rheological model to predict viscosity of dispersions as a function of the modified Peclet number

The suspensions and emulsions are important products and raw materials for various industrial production and processing branches. The knowledge concerning the rheological properties of such substances is of key importance for many manufacturing processes. Many dependences can be found within the lit...

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Bibliographic Details
Published in:Korea-Australia rheology journal 2019, 31(2), , pp.81-88
Main Authors: Sęk, Jerzy P., Błaszczyk, Mariola M., Przybysz, Łukasz
Format: Article
Language:English
Subjects:
Capillary tubes
Characterization and Evaluation of Materials
Chemistry and Materials Science
Complex Fluids and Microfluidics
Emulsions
Food Science
Materials Science
Mechanical Engineering
Peclet number
Polymer Sciences
Raw materials
Rheological properties
Rheology
Shear rate
Soft and Granular Matter
Viscosity
공학일반
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Summary:The suspensions and emulsions are important products and raw materials for various industrial production and processing branches. The knowledge concerning the rheological properties of such substances is of key importance for many manufacturing processes. Many dependences can be found within the literature but there is lack of model that takes into account the influence of inner phase concentration, share rate, and diameters of the dispersed phase particles on a viscosity of these systems. The presented work goal was to obtain a rheological equation containing the modified form of Peclet number, which would provide the relation between the viscosity, the volume fraction, and the shear rate. The theory of Kozeny-Carman, which transforms the granular structure into a bunch of the torturous capillary tubes, was the base of this model. The proposed model has been verified for data available in the literature and for the data obtained in authors own experiments.
ISSN:1226-119X
2093-7660
DOI:10.1007/s13367-019-0009-2