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.
Microstructure and particle-phase stress in a dense suspension / Jenkins, J. T.; LA RAGIONE, Luigi. - 1227:(2010), pp. 41-49. (Intervento presentato al convegno Joint IUTAM-ISIMM Symposium on Mathematical Modeling and Physical Instances of Granular Flows tenutosi a Reggio Calabria nel 14-18 September 2009) [10.1063/1.3435412].
Microstructure and particle-phase stress in a dense suspension
LA RAGIONE, Luigi
2010-01-01
Abstract
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
