title: Irreversibility and chaos: role of lubrication interactions in sheared suspensions.
abstract: We investigate non-Brownian particles suspended in a periodic shear-flow using simulations. Following Metzger and Butler [Phys. Rev. E 82, 051406 (2010)], we show that the chaotic dynamics arising from lubrication interactions are too weak to generate an observable particle dispersion. The irreversibility observed in periodic flow is dominated by contact interactions. Nonetheless, we show that lubrication interactions must be included in the calculation to obtain results that agree with experiments.
authors.affiliation: IUSTI-CNRS UMR 7343, Aix-Marseille University, France.
authors.forename: Bloen
authors.initials: B
authors.lastname: Metzger
authors.forename: Phong
authors.initials: P
authors.lastname: Pham
authors.forename: Jason E
authors.initials: JE
authors.lastname: Butler
mesh_terms: D003102:Colloids / Q000737:chemistry*; D003198:Computer Simulation; D017276:Friction; D008153:Lubrication; D008956:Models, Chemical; D008958:Models, Molecular; D017711:Nonlinear Dynamics; D012212:Rheology / Q000379:methods*; D033081:Shear Strength; D012996:Solutions / Q000737:chemistry*
chemical_list: D003102:Colloids; D012996:Solutions