scholarly journals Modeling of fluid-solid interaction in granular media with coupled lattice Boltzmann/discrete element methods: application to piping erosion

2011 ◽  
Vol 37 (6) ◽  
pp. 577-596 ◽  
Author(s):  
Franck Lominé ◽  
Luc Scholtès ◽  
Luc Sibille ◽  
Philippe Poullain
Keyword(s):  
Lattice Boltzmann ◽  
Granular Media ◽  
Discrete Element ◽  
Piping Erosion ◽  
Discrete Element Methods ◽  
Fluid Solid Interaction

scholarly journals Certain Discrete Element Methods in Problems of Fracture Mechanics

10.14311/374 ◽  
2002 ◽  
Vol 42 (4) ◽  
Author(s):  
P. P. Procházka ◽  
M. G. Kugblenu
Keyword(s):  
Material Properties ◽  
Granular Media ◽  
Dynamic Equilibrium ◽  
Discrete Element ◽  
Particle Flow ◽  
Particle Flow Code ◽  
Classical Particle ◽  
Numerical Experience ◽  
Discrete Element Methods ◽  
Element Method

In this paper two discrete element methods (DEM) are discussed. The free hexagon element method is considered a powerful discrete element method, which is broadly used in mechanics of granular media. It substitutes the methods for solving continuum problems. The great disadvantage of classical DEM, such as the particle flow code (material properties are characterized by spring stiffness), is that they have to be fed with material properties provided from laboratory tests (Young's modulus, Poisson's ratio, etc.). The problem consists in the fact that the material properties of continuum methods (FEM, BEM) are not mutually consistent with DEM. This is why we utilize the principal idea of DEM, but cover the continuum by hexagonal elastic, or elastic-plastic, elements. In order to complete the study, another one DEM is discussed. The second method starts with the classical particle flow code (PFC - which uses dynamic equilibrium), but applies static equilibrium. The second method is called the static particle flow code (SPFC). The numerical experience and comparison numerical with experimental results from scaled models are discussed in forthcoming paper by both authors.

scholarly journals Application of Discrete Element Methods to the Problem of Rock Bumps

10.14311/378 ◽  
2002 ◽  
Vol 42 (4) ◽  
Author(s):  
P. P. Procházka ◽  
M. G. Kugblenu
Keyword(s):  
Discrete Element Method ◽  
Granular Media ◽  
Dynamic Equilibrium ◽  
Discrete Element ◽  
Particle Flow ◽  
Particle Flow Code ◽  
Classical Particle ◽  
Discrete Element Methods ◽  
Scaled Models ◽  
Element Method

This paper is a continuation of a previous paper by the authors. Applications of two discrete element methods (DEM) to several fields of geotechnics are discussed. The free hexagon element method is considered a powerful discrete element method, and is widely used in mechanics of granular media. It substitutes the methods for solving continuum problems. In order to complete the study, other discrete element methods are discussed. The second method starts with the classical particle flow code (PFC, which uses dynamic equilibrium), but we apply static equilibrium in our case. The second method is called the static particle flow code (SPFC). The numerical experiences and comparison with experimental results from scaled models are discussed.

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