We investigate the dynamics of granular materials confined in a radial Hele-Shaw cell,
during central air injection. The behavior of this granular system, driven by its interstitial fluid …

With the increasing pressure of oil and gas development costs, the problems caused by the
proppant flowback are becoming prominent and gradually gaining the attention of scholars …

It has been recently reported that ballast comprising differently graded layers helps to
reduce track settlement. The main goal of this paper is to provide micro mechanical insight …

Channel formation and branching is widely seen in physical systems where movement of
fluid through a porous structure causes the spatiotemporal evolution of the medium. We …

We compare quantitatively two experimental situations concerning injection of a miscible
fluid into an initially jammed granular medium saturated with the same fluid, confined in a …

Flow through a saturated, granular, porous medium can lead to internal erosion, preferential
flow enhancement, and the formation of channels within the bulk of the medium. We …

We investigate experimentally the pattern formation process during injection of air in a
noncohesive granular material confined in a linear Hele-Shaw cell. We characterize the …

The goal of hydraulic fracturing is placing a granular material, proppant, in the created
fracture to sustain its conductivity and attain economical production rates. After fracture …

Laboratory air injection experiments in a two-dimensional vertically placed cell filled with a
water-saturated packing of spherical glass beads show a particular transition of air flow …

We present here a simplified, analytical 2D model of sand production. Computing sanding
for different failed zone geometries allows us to put lower and higher bounds on expected …