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Shear Flow of Suspensions under Wall Influence: Phenomenological Theory and Effects
Author(s) -
Muckenfuss Silke,
Buggisch Hans
Publication year - 2003
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.200310478
Subject(s) - phenomenological model , classification of discontinuities , mechanics , boundary layer , materials science , slip (aerodynamics) , shear flow , boundary value problem , particle (ecology) , classical mechanics , physics , thermodynamics , geology , condensed matter physics , mathematics , mathematical analysis , oceanography , quantum mechanics
The influence of solid boundary walls in shear flow of suspensions leads to structure formation and particle transport. We have developed a phenomenological model to describe the wall effects such as the formation of a wall boundary layer, the occurence of pseudo wall slip as well as discontinuities of the particle concentration. Using the model particle concentration profiles, thickness of boundary layer and suitably defined wall slip velocities depending on the total particle concentration of the suspension can be determined.