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Coupling Heterarchical Granular Dynamics and Computational Fluid Dynamics
Jiahuan Li, Shivakumar Athani, Alistair Gillespie +3
Granular flows in ambient fluids exhibit grain-size-dependent segregation, which is difficult to capture efficiently with existing models, especially in large-scale systems involvi…
Scale dependence of segregation patterns in the filling of silos
Shivakumar Athani, Benjy Marks, François Guillard +2
Size segregation in granular flows is a well-known phenomenon: laboratory experiments consistently show that large particles migrate toward silo walls during filling, while smaller…
Heterarchical Granular Dynamics
Benjy Marks, Shivakumar Athani, Itai Einav
The two most commonly used methods to model the behaviour of granular flows are discrete element and continuum mechanics simulations. These approaches concentrate on the determinis…
Fatigue failure in glasses under cyclic shear deformation
Swarnendu Maity, Himangsu Bhaumik, Shivakumar Athani +1
Solids subjected to repeated cycles of stress or deformation can fail after several cycles, a phenomenon termed fatigue failure. Although intensely investigated for a wide range of…
Transients in shear thickening suspensions: when hydrodynamics matters
Shivakumar Athani, Bloen Metzger, Yoël Forterre +1
Using particle-based numerical simulations performed under pressure-imposed conditions, we investigate the transient dilation dynamics of a shear thickening suspension brought to s…
Inertial drag in granular media
Shivakumar Athani, Pierre Rognon
Like in liquids, objects moving in granular materials experience a drag force. We investigate here whether and how the object acceleration affect this drag force. The study is base…