Wet granular medium
Mixing of a wet granular medium: Influence of the liquid addition method
... At the beginning of the mixing process (I), the first amount of liquid added is distributed at the surface of the particles without the formation of liquid bridges. Then, in the pendulary state (II), the liquid amount at ...
6
Mixing of a wet granular medium: Effect of the particle size, the liquid and the granular compacity on the intensity consumption
... 3. Results and discussion 3.1. Particle size effect on the specific intensity consumption of mixing in funicular and capillary states Several glass beads and calcites were mixed in order to study the solids properties ...
Effective thermal conductivity of a wet porous medium – presence of hysteresis when modeling the spatial water distribution for the pendular regime
... During the evaporation/condensation of water in a wet granular medium, the liquid volume in each elementary cell changes with time. It is interesting to know the variation of the effective thermal ...
5
Effective thermal conductivity of a wet porous medium – Presence of hysteresis when modeling the spatial water distribution for the pendular regimé
... 5 Heat flux with respect to water liquid volume During the evaporation/condensation of water in a wet granular medium, the liquid volume in each elementary cell changes with time. It is interesting ...
9
Drag force applied to an intruder during its extraction from an ensiled granular medium: experiments and 2D DEM simulations
... julien.lehuen@supagro.fr Abstract. In many powder technologies such as kneading, mixing or raking, an intruder is used to shear the granular material and to induce particle mobilities. For such processes, it is ...
2
Drag force applied to an intruder during its extraction from an ensiled granular medium: experiments and 2D DEM simulations
... ensiled granular medium: experiments and 2D DEM simulations Julien Lehuen, Jean-Yves Delenne, Thierry Ruiz and Agnès Duri UMR IATE 1208 CIRAD/INRA/Montpellier SupAgro/Université Montpellier – 2 Place Pierre ...
2
Numerical modelling of medium-speed impacts on a granular surface in a low-gravity environment application to Hayabusa2 sampling mechanism
... partly consists of a 300 m s −1 impact. In this paper, we look at medium-speed im- pacts, from 50 to 300 m s −1 , into a granular material bed, to better understand crater formation and ejecta ...
28
Contribution to certain physical and numerical aspects of the study of the heat transfer in a granular medium
... On the other hand, the calculation of the eective thermal conductivity for a gran- ular medium (in pendular regime) formed of three components: solid, liquid water and air was performed. A simple model of two ...
197
Vibrated granular media as experimentally realizable Granular Gases
... in Eq. (1) (see Fig. 2b), and with constant restitution coefficient r = 0.95, often used to describe steel particles (see Fig. 2c), and finally with an unrealistic constant restitution coefficient r = 0.7 (see Fig. 2d). ...
21
Experimental framework for evaluating the mechanical behavior of dry and wet crushable granular materials based on the particle breakage ratio
... crushable granular materials depends also on the water content: the higher the material humidity, the higher the particle ...crushable granular materials through constitutive models based on grading ...
13
Mechanical feedback between a growing root and a deformable granular medium: extracting physical laws from numerical simulations
... We started answering these questions in a theoretical way, developing a numerical model of root growth in a granular medium. The model is based on the discrete-element method (DEM). Single roots are ...
2
Mars, the wet planet
... Our first strong evidence of water on Mars came in the late 1970’s, with the two Viking space missions. Each mission had two parts, an orbiter which would survey Mars from above, and a lander. The orbiters showed dried ...
2
On dense granular flows
... small µ p (with log-scale variations). During a collision between grains, there is at the same time a contact force that push the grains back and a dissi- pation of energy related to the inelasticity. One can asso- ciate ...
27
July Wet-Bulb Design Temperatures
... L’accès à ce site Web et l’utilisation de son contenu sont assujettis aux conditions présentées dans le site LISEZ CES CONDITIONS ATTENTIVEMENT AVANT D’UTILISER CE SITE WEB.. NRC Publica[r] ...
2
Granular Rayleigh-Taylor instability
... Summary. A granular instability driven by gravity is studied experimentally and numerically. The instability arises as grains fall in a closed Hele-Shaw cell where a layer of dense granular material is ...
11
Sinking a Granular Raft
... DOI: 10.1103/PhysRevLett.118.108001 Archimedes discovered the force of buoyancy over two thousand years ago. He stated in his famous principle that the buoyancy of an object is strictly related to the weight of fluid ...
6
Deposition of granular solids
... ABSTRACT The present work employs the proposed formulations of the solids stresses by Savage (2011) to examine the deposition of dry granular materials. The aim is to examine the performance of the expressions of ...
24
Colonization Credit in Restored Wet Heathlands
... and wet heathlands in Belgium, which are the target habitats of this ...regime. Wet heathlands develop on mineral soils with high phreatic fluctuations (<10 cm peat), poor fens on soils with temporary or ...
13
Droplets bouncing on a wet, inclined substrate
... We present the results of an experimental investigation of fluid drops impacting an inclined rigid surface covered with a thin layer of high viscosity fluid. We deduce the conditions und[r] ...
28
Two-dimensional numerical simulation of chimney fluidization in a granular medium using a combination of discrete element and lattice Boltzmann methods
... including granular kinetic theory with Eulerian approach [ 43 ], all other previous numerical investiga- tions used a discrete particle approach to model related systems such as multiple spout-fluidized beds [ 29 ...
24