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Hydrodynamic transport properties of concentrated suspensions
Author(s) -
Chang Chingyi,
Powell Robert L.
Publication year - 2002
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690481106
Subject(s) - sphericity , atomic packing factor , mechanics , sedimentation , particle (ecology) , flow (mathematics) , materials science , shear flow , particle size , shear (geology) , thermodynamics , chemistry , composite material , physics , geology , paleontology , oceanography , sediment , crystallography
A method of estimating the dependency of the relative viscosities and average sedimentation velocities of particle dispersions on the particle packing behavior, which is related to the shape (sphericity or aspect ratio) of the particle and the ruggedness of the particle surface is proposed. For each ensemble of microstructures, as determined by the flow system in which measurements are made (such as steady shear flow, high‐frequency dynamic shear flow, or sedimentation in a static fluid), a single master curve is obtained. These curves allow direct estimates of the relative viscosities or sedimentation velocities to be made if the maximum packing fraction is known.