Rheological properties of suspensions of rigid particles

Journal Article · Sat May 01 04:00:00 EDT 1976 · AIChE J.; (United States)

DOI:https://doi.org/10.1002/aic.690220303· OSTI ID:7179581

Jeffrey, D J; Acrivos, A

Experimental and theoretical work on the rheological properties of suspensions are reviewed. Attention is focused on systems consisting of rigid, neutrally buoyant particles suspended in Newtonian fluids; no restrictions, however, are placed on the concentration of the particles or on the forces acting in the suspension. The assumption that an effective viscosity depending solely on the volume fraction of the particles suffices to describe the rheology of suspensions is examined and shown to be inadequate. Indeed, the experimental evidence strongly supports the view that suspensions behave macroscopically as non-Newtonian fluids whose rheological properties are influenced by a large number of factors; these factors are listed. The various theories that have been put forward to explain the flow of suspensions are discussed, with particular emphasis placed on the nature of the approximations made, so that purely empirical formulas can be clearly separated from those having a theoretical basis. Suggestions for future work, both theoretical and experimental, are provided.

• Research Organization: Stanford Univ., CA
• OSTI ID: 7179581
• Journal Information: AIChE J.; (United States), Journal Name: AIChE J.; (United States) Vol. 22:3; ISSN AICEA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
CONFIGURATION
DISPERSIONS
DOCUMENT TYPES
FLUID FLOW
PARTICLE SIZE
REVIEWS
RHEOLOGY
SIZE
SUSPENSIONS