Granular flows
Rheology and scaling behavior of cascading granular flows in rotating drums
... of granular materials 1 – 4 ...steady-state granular flows 5 , 6 , 8 – 11 ...of granular materials in rotating drums are complex mainly because of the inhomogeneous flow of particles combining ...
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Evidence of Mechanically Activated Processes in Slow Granular Flows
... foams, granular media, emul- sions or colloidal ...of granular flows. The rheology of granular flows in the dense regime has been extensively investigated over the past decade [ 14 , 15 ...
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Euler-like modelling of dense granular flows: application to a rotating drum
... In some sense, similar difficulties are encountered in the understanding and modelling of turbulent flows. In that case, the challenge is to relate the Reynolds stresses, based on small scale fluctuations, to ...
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Steady and unsteady fluidised granular flows down slopes
... rapid granular flows) can be evaluated through the use of granular kinetic theories (Jenkins & Savage 1983), in which a key dependent variable is the granular temperature, T , a measure of ...
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The influence of localised size reorganisation on short-duration bidispersed granular flows
... of granular materials has im- portant applications to natural hazard prediction for snow avalanches, landslides and debris flows and in industrial and mining ...These granular materials are char- ...
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Continuum modelling and simulation of granular flows through their many phases
... Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA (Received 9 December 2015) We propose and numerically implement a constitutive framework for granular media ...
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Numerical simulation of 2D steady granular flows in rotating drum: On surface flows rheology
... INTRODUCTION Granular media present numbers of interesting and un- usual behaviours: They can flow as liquids, but, under some circumstances, they can jam and resist to external shear stress without ...of ...
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Experimental study of gas-fluidized granular flows with implications for pyroclastic flow emplacement
... concentrated flows of fine par- ticles of group A propagate at constant thickness and velocity for most of their duration, and are in a regime similar to the slumping regime of high Reynolds number gravity ...
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Impact of Fluidized Granular Flows into Water: Implications for Tsunamis Generated by Pyroclastic Flows
... To improve the predictive model here, the exponents of equation (1) are set to ob- tain the best fit with our experimental results, in the case of fluidized granular flows. A better agreement is also ...
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Nonsmooth simulation of dense granular flows with pressure-dependent yield stress
... Several works have focused on the simulation of such a model, most of them considering the flow to be incompressible [Lagrée et al., 2011, Chambon et al., 2011, Staron et al., 2014, Ionescu et al., 2015, Chauchat and ...
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The influence of localised size reorganisation on short-duration bidispersed granular flows
... of granular materials has im- portant applications to natural hazard prediction for snow avalanches, landslides and debris flows and in industrial and mining ...These granular materials are char- ...
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On dense granular flows
... uniform granular flows obtained by different groups in six different geometries both in experi- ments and numerical ...of granular flows and enhances the open problem of defining a single ...
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Experiments on deaerating granular flows and implications for pyroclastic flow mobility
... gentle surface inclination where emplaced on a sub-hori- zontal topography. Examples of small surface slopes of <4 for pumice rich deposits at Lascar Volcano [Calder et al., 2000], <3 for the Ito and Minoan ...
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Final Report of AMoSS : Advanced Modeling on Shear Shallow Flows for Curved Topography : water and granular flows
... compressible granular flows Flow of granular material have been extensively investigated in recent years and the ultimate goal is to capture the flow dynamics under various flow conditions that can ...
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Scaling behavior of particle breakage in granular flows inside rotating drums
... As an example of recent work in this field, it is worth mentioning models that combine the Discrete Element Method (DEM) for particle interactions and PBM for predicting the size distribution of the fragments [ 17 , 18 ...
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Granular flows down inclined channels with a strain-rate dependent friction coefficient. Part II : cohesive materials
... Granular flows down inclined channels with a strain-rate dependent friction ...for granular materials with a constant cohesion, is proposed and applied in the case of a flow down an inclined ...
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Viscoinertial regime of immersed granular flows
... a n declines. Since μ is the half-sum of the three anisotropies and the normal and tangential force anisotropies add up to a nearly constant value, the main contribution to the increase of μ arises from the strong ...
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Analytical solution of the $\mu(I)-$rheology for fully developed granular flows in simple configurations
... Introduction Granular flows [1] are of important scientific interest because of their complex nature as well as their wide occurrence in industry and in ...fluid flows, they display different ...
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Dense granular flows: interpolating between grain inertia and fluid viscosity based constitutive laws
... Dense granular flows: interpolating between grain inertia and fluid viscosity based constitutive laws Pierre Rognon and Cyprien Gay ∗ Centre de Recherche Paul Pascal, CNRS UPR 8641 - ...
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Granular flows down inclined channels with a strain-rate dependent friction coefficient. Part I: Non-cohesive materials
... Keywords Granular materials · Surface flows 1 Introduction The description of dense granular flows is a subject of impor- tance in process engineering and geophysics, including when there is ...
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