Zobrazeno 1 - 10
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pro vyhledávání: '"Huppert, Herbert E"'
Granular column collapse is a simple but important problem to the granular material community, due to its links to dynamics of natural hazards, such as landslides and pyroclastic flows, and many industrial situations, as well as its potential of anal
Externí odkaz:
http://arxiv.org/abs/2307.13384
In this letter, following an extensive experimental validation, we perform constant-volume shearing simulations of non-Brownian granular suspensions using the discrete element method coupled with the lattice Boltzmann method. We choose a wide range o
Externí odkaz:
http://arxiv.org/abs/2307.08275
In this communication, we present a new lengthscale-based rheology for dense sheared particle suspensions as they transition from inertial- to viscous-dominated. We derive a lengthscale ratio using straightforward physics-based considerations for a p
Externí odkaz:
http://arxiv.org/abs/2210.08746
The behavior of granular column collapses is associated with the dynamics of geohazards, such as debris flows, landslides, and pyroclastic flows, yet its underlying physics is still not well understood. In this paper, we explore granular column colla
Externí odkaz:
http://arxiv.org/abs/2210.07529
We present a shallow, isothermal, Newtonian model for the transient interaction of lava flows with topography. Numerical integrations and simple mathematical approximations are deployed to quantify how topography controls lava thicknesses and flow sp
Externí odkaz:
http://arxiv.org/abs/2207.05917
Publikováno v:
Powder Technology, 407, 117591 (2022)
We investigate granular column collapses with different column cross-sections and associate the cross-section shape influence with a finite-size analysis. Previous research, confined to initially circular configurations, reviewed the importance of gr
Externí odkaz:
http://arxiv.org/abs/2206.00915
In this letter, we investigate the transient rheological behavior of immersed granular flows using both experiments of submerged granular column collapses and corresponding numerical simulations. The simulations are performed with the lattice-Boltzma
Externí odkaz:
http://arxiv.org/abs/2205.15067
Autor:
Wyatt, George R., Huppert, Herbert E.
We study the dynamics of proppants carried by fluid driven into an evolving penny-shaped fracture. The behaviour of the slurry flow is investigated in two phases: pressurised injection and elastic closure. During injection the slurry is modelled usin
Externí odkaz:
http://arxiv.org/abs/2101.11301
Publikováno v:
Geophysical Research Letters, 48, e2021GL096054
In this letter, we focus on the size effect of granular column collapses, which are potentially connected to the dynamics of complex geophysical flows, even if the link between microscopic structures of granular assemblies and their macroscopic behav
Externí odkaz:
http://arxiv.org/abs/2012.03287
Autor:
Webber, Joseph J., Huppert, Herbert E.
Publikováno v:
Environ. Fluid. Mech. (2021)
We investigate the all-penetrating drift velocities, due to surface wave motion in an effectively inviscid fluid that overlies a saturated porous bed of finite depth. Previous work in this area either neglects the large-scale flow between layers [Phi
Externí odkaz:
http://arxiv.org/abs/2009.07775