On the erosion of cohesive granular soils by a submerged jet: a numerical approach

Hydraulic failure of granular materials with artificial cementation

“…In summary, this study could pave the way for an extension of the dimensional relationships established for particulate systems interacting with a fluid flow to the case of cemented granular materials, not only in the context of fluidization but also more widely. However, these initial encouraging results would need of course to be confirmed by future studies on the effects of hydraulic loading on cemented granular materials, for instance following on from this work and other previous investigations on the surface erosion of soils [24,33].…”

“…Other than this, a few numerical studies can also be mentioned, all based on similar approaches coupling Lattice Boltzmann and Discrete Elements methods in 2D, with addition of an adhesive contact model between neighboring grains. The interested reader may refer for instance to [23,24] and references therein for more information on the numerical methods and other examples of soil erosion applications. More specifically, as far as the present localized hydraulic failure situation is concerned, Cui and co-authors [25] investigated exactly the present configuration and mostly qualitatively showed that an increasing adhesion force between particles generates less dilation in the bed, with progressive appearance of cracks during cavity expansion from the inlet.…”

“…A relevant dimensionless group for these granular systems with inter-particle adhesion is the so-called cohesive granular Bond number, denoted Bo g , which compares gravitational (and frictional) effects with cohesion [8,[30][31][32]. Defined at the microscopic scale, and including buoyancy, this dimensionless number can be written as [24,33]:…”