Rheology of non-Brownian suspensions of rough frictional particles under shear reversal: A numerical study
نویسندگان
چکیده
HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d’enseignement et de recherche français ou étrangers, des laboratoires publics ou privés. Rheology of non-Brownian suspensions of rough frictional particles under shear reversal: A numerical study Francois Peters, Giovanni Ghigliotti, Stany Gallier, Frédéric Blanc, Elisabeth Lemaire, Laurent Lobry
منابع مشابه
Shear thickening in granular suspensions: interparticle friction and dynamically correlated clusters.
We consider the shear rheology of concentrated suspensions of non-Brownian frictional particles. The key result of our study is the emergence of a pronounced shear-thickening regime, where frictionless particles would normally undergo shear thinning. We can clarify that shear thickening in our simulations is due to enhanced energy dissipation via frictional interparticle forces. Moreover, we ev...
متن کاملShear thickening regimes of dense non-Brownian suspensions.
We propose a unifying rheological framework for dense suspensions of non-Brownian spheres, predicting the onsets of particle friction and particle inertia as distinct shear thickening mechanisms, while capturing quasistatic and soft particle rheology at high volume fractions and shear rates respectively. Discrete element method simulations that take suitable account of hydrodynamic and particle...
متن کاملDisentangling glass and jamming physics in the rheology of soft materials
The shear rheology of soft particle systems becomes complex at large density because crowding effects may induce a glass transition for Brownian particles or a jamming transition for non-Brownian systems. Here we successfully explore the hypothesis that the shear stress contributions from glass and jamming physics are ‘additive’. We show that the experimental flow curves measured in a large var...
متن کاملDiverging viscosity and soft granular rheology in non-Brownian suspensions.
We use large scale computer simulations and finite-size scaling analysis to study the shear rheology of dense three-dimensional suspensions of frictionless non-Brownian particles in the vicinity of the jamming transition. We perform simulations of soft repulsive particles at constant shear rate, constant pressure, and finite system size and carefully study the asymptotic limits of large system ...
متن کاملRheology of non-Brownian particles suspended in concentrated colloidal dispersions at low particle Reynolds number
The shear flow of non-Brownian glass spheres suspended in a concentrated colloidal dispersion that exhibits non-Newtonian rheology is investigated. At low volume fractions, the addition of non-Brownian spherical particles to the colloidal dispersion leads to an increase in the shear viscosity as well as the dynamic moduli. The flow curves of these suspensions are qualitatively similar to the su...
متن کامل