We calculate the microstructure and particle phase stress in the slow flow of a dense monolayer of identical spheres subjected to pure straining in a viscous liquid. The spheres are assumed to interact through lubrication forces and a short-range repulsion. This repulsive force breaks the symmetry of the approach and departure of a typical pair and is responsible for the asymmetry in the particle concentration about axes at 45° to the principal axes of straining. This asymmetry in particle concentration is responsible for a particle pressure and influence the shear stress associated with the particle phase.
|Titolo:||Microstructure and particle-phase stress in a dense suspension|
|Data di pubblicazione:||2010|
|Nome del convegno:||Joint IUTAM-ISIMM Symposium on Mathematical Modeling and Physical Instances of Granular Flows|
|Digital Object Identifier (DOI):||10.1063/1.3435412|
|Appare nelle tipologie:||4.1 Contributo in Atti di convegno|