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Mixing and fluid dispersion of viscous liquids
Author(s) -
Ranz W. E.
Publication year - 1982
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.690280113
Subject(s) - striation , breakup , mixing (physics) , surface tension , viscosity , dispersion (optics) , mechanics , flow (mathematics) , viscous liquid , thermodynamics , volumetric flow rate , materials science , chemistry , optics , physics , composite material , quantum mechanics
A model based on extension and secondary motions of striations in a deforming flow is used to predict details of the mixing and dispersion of viscous liquids. Generally, extension of intermaterial area and interfacial surface occurs in stagnation regions, and breakup ensues when the striated flow has left such a region or has time to form unmixing regions of smaller scale in the stretching flow. Complex criteria for the types of mixing anticipated are based on differences in viscosity, differences in density, striation scale, rate of stretch, and, for various degrees of immiscibility, interfacial tension.