Patrick Mutabaruka
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View article: Advanced strategies for discrete simulations with three-dimensional R-shapes in rockable framework
Advanced strategies for discrete simulations with three-dimensional R-shapes in rockable framework Open
The Discrete Element Method (DEM) is widely used to simulate the mechanical behavior of granular materials across a broad range of applications and industrial domains. Particle shape is a key feature playing a crucial role for physics-fide…
View article: Dynamics of wet granular flows down an inclined plane
Dynamics of wet granular flows down an inclined plane Open
Despite the important role of wet granular flows in numerous industrial and natural processes, their rheology in the inertial regime has only recently been formalized [T. T. Vo et al., Nat. Commun. 11, 1476 (2020)] through a single dimensi…
View article: Breakage dynamics and scaling of wet aggregates of rigid particles
Breakage dynamics and scaling of wet aggregates of rigid particles Open
The mechanical behaviour of wet particle aggregates is crucial in many granular processes such as wet granulation and soil degradation. However, the interplay of capillary and viscous forces for aggregate stability and breakage have remain…
View article: Evolution of granular materials under isochoric cyclic simple shearing
Evolution of granular materials under isochoric cyclic simple shearing Open
By means of 3D particle dynamics simulations, we analyze the microstructure of granular materials subjected to isochoric (constant volume) cyclic shearing, which drives the system towards a liquefaction state characterized by loops of jamm…
View article: Geometrical network of granular materials under isochoric cyclic shearing
Geometrical network of granular materials under isochoric cyclic shearing Open
We use three-dimensional particle dynamics simulations to investigate the microstructure evolution of granular material subjected to isochoric cyclic shearing, driving the system to a liquefaction state. The cyclically sheared assembly pre…
View article: Evolution of wet agglomerates inside inertial shear flow of dry granular materials
Evolution of wet agglomerates inside inertial shear flow of dry granular materials Open
We use particle dynamics simulations to investigate the evolution of a wet agglomerate inside homogeneous shear flows of dry particles. The agglomerate is modeled by introducing approximate analytical expressions of capillary and viscous f…
View article: Effects of size polydispersity on random close-packed configurations of spherical particles
Effects of size polydispersity on random close-packed configurations of spherical particles Open
We analyze the packing properties of simulated three-dimensional polydisperse samples of spherical particles assembled by mechanical compaction with zero interparticle friction, leading to random close-packed configurations of the highest …
View article: Granulation of wet granular media in rotating drum
Granulation of wet granular media in rotating drum Open
International audience
View article: Particle dynamics simulation of wet granulation in a rotating drum
Particle dynamics simulation of wet granulation in a rotating drum Open
We simulate the granulation process of solid spherical particles in the presence of a viscous liquid in a horizontal rotating drum by using molecular dynamics simulations in three dimensions. The numerical approach accounts for the cohesiv…
View article: 3D simulations of the granulation of wet granular materials
3D simulations of the granulation of wet granular materials Open
International audience
View article: Particle dynamics simulation of wet granulation in a rotating drum
Particle dynamics simulation of wet granulation in a rotating drum Open
We simulate the granulation process of solid spherical particles in the presence of a viscous liquid in a horizontal rotating drum by using molecular dynamics simulations in three dimensions. The numerical approach accounts for the cohesiv…
View article: Viscoinertial regime of immersed granular flows
Viscoinertial regime of immersed granular flows Open
By means of extensive coupled molecular dynamics-lattice Boltzmann simulations, accounting for grain dynamics and subparticle resolution of the fluid phase, we analyze steady inertial granular flows sheared by a viscous fluid. We show that…
View article: Viscoinertial regime of immersed granular flows
Viscoinertial regime of immersed granular flows Open
By means of extensive coupled molecular dynamics–lattice Boltzmann simulations, accounting for grain dynamics and subparticle resolution of the fluid phase, we analyze steady inertial granular flows sheared by a viscous fluid. We show that…
View article: A simulation technique for slurries interacting with moving parts and deformable solids with applications
A simulation technique for slurries interacting with moving parts and deformable solids with applications Open
A numerical method for particle-laden fluids interacting with a deformable solid domain and mobile rigid parts is proposed and implemented in a full engineering system. The fluid domain is modeled with a lattice Boltzmann representation, t…
View article: Scaling behavior of immersed granular flows
Scaling behavior of immersed granular flows Open
The shear behavior of granular materials immersed in a viscous fluid depends on fluid properties (viscosity, density), particle properties (size, density) and boundary conditions (shear rate, confining pressure). Using computational fluid …
View article: Strength of wet agglomerates of spherical particles: effects of friction and size distribution
Strength of wet agglomerates of spherical particles: effects of friction and size distribution Open
\nWe investigate the mechanical behavior of wet granular agglomerates composed of spherical particles by means of molecular dynamics simulations. The capillary cohesion force is modeled as an attraction force at the contact between two par…
View article: Effect of particle size distribution on 3D packings of spherical particles
Effect of particle size distribution on 3D packings of spherical particles Open
\nWe use molecular dynamics simulations of frictionless spherical particles to investigate a class of polydisperse granular materials in which the particle size distribution is uniform in particle volumes. The particles are assembled in a …