Pyroclastic density currents (PDCs) are dangerous multiphase flows originating from
volcanic eruptions. PDCs cause more than a third of volcanic fatalities globally and …

Flows of solid particles are known to exhibit a clustering instability—dynamic microstructures
characterized by a dense region of highly concentrated particles surrounded by a dilute …

The Enskog kinetic theory is used as a starting point to model a suspension of solid particles
in a viscous gas. Unlike previous efforts for similar suspensions, the gas-phase contribution …

In this work the quantitative and qualitative ability of a kinetic-theory-based two-fluid model
(KT-TFM) is assessed in a state of fully periodic sedimentation (fluidization), with a focus on …

Clustering is often presumed to lead to enhanced agglomeration between cohesive grains
due to the reduced relative velocities of particles within a cluster. Our discrete-particle …

Previous work has indicated that inelastic grains undergoing homogeneous cooling may be
unstable, giving rise to the formation of velocity vortices, which may also lead to particle …

The transport coefficients of a granular fluid driven by a stochastic bath with friction are
obtained by solving the inelastic Enskog kinetic equation from the Chapman-Enskog …

The Boltzmann equation for inelastic and rough hard spheres is considered as a model of a
dilute granular gas. In this model, the collisions are characterized by constant coefficients of …

Much confusion exists on whether force‐or energy‐based descriptions of cohesive‐particle
interactions are more appropriate. We hypothesize a force‐based description is appropriate …

An intriguing phenomenon displayed by granular flows and predicted by kinetic-theory-
based models is the instability known as particle “clustering,” which refers to the tendency of …