Discrete Element Method (DEM) is a powerful tool for simulating different types of mills. It also used computing particles such as rocks, grains, and molecules. DEM has been widely in the field rock mechanics. In present work, DEM approach applied to model milling media (powder balls) inside planetary ball mill estimate distribution dry powder during milling. fact, efficiency DEM strongly depen...

While there have been many discrete element method (DEM) publications considering the micromechanics of granular materials subject to monotonic loading, studies of the particle-scale material response to cyclic or repeated loading have been comparatively rare. From a geotechnical perspective soil is subjected to repeated loading in a variety of situations. Examples include foundations to railwa...

The prediction quality of discrete element method (DEM) models for railway ballast can be expected to depend on three points: the geometry representation of the single particles, the used contact models and the parametrisation using principal experiments. This works aims at a balanced approach, where none of the points is addressed with excessive depth. In a first step, a simple geometry repres...

An important aspect of hydraulic flood modelling deals with representing topography of river and floodplain. Commonly, flood model applications are reported successful in topographically simple areas were topography only changes gradually and where topography is simulated by DEM’s of relatively low resolution. Such DEM’s are particular useful for flood simulation in rural areas, although import...

This study is an engineering application of optimum design approach using the discrete element method (DEM) and a genetic algorithm (GA) which one most commonly used evolutionary computation algorithms. The three-dimensional shapes waste electrical electronic equipment (WEEE) were directly applied in DEM simulation. DEM-GA simulation was to tray set on single-item feeder for recycling WEEEs; as...

Abstract This study provides a framework for new approach addressed to performing constructed wetlands modeling by using computational fluid dynamics (CFD) coupled with the discrete element method (DEM). methodology is based on adoption of open-source software perform advanced hydraulic simulations that enable provide detailed representation water flow through CFD as well solid phase considerat...

-This paper reviews the concepts of a theory of modelling and simulation that relate to the validation enterprise. The theory provides a vocabulary, concepts, and mathematically rigorous tools with which to tackle problems in simulation model validation. We have implemented a hierarchical, distributed, object-oriented, and knowledge-based modelling and simulation environment in Ada. The environ...

Hydrologic modeling of semi-arid watersheds is imperative for the development of appropriate water and soil conservation plans. In the current study, the efficiency of Kinematic Runoff and Erosion model-version 2 (K2) model was used to evaluate water discharge and sediment load simulation of Bar watershed, located in the north-eastern part of Iran. The K2 model relies on the kinematic wave appr...

Pebble flow simulation plays an important role in the steady state and transient analysis of thermal-hydraulics and neutronics for Pebble Bed Reactors (PBR). The Discrete Element Method (DEM) and the modified Molecular Dynamics (MD) method are widely used to simulate the pebble motion to obtain the distribution of pebble concentration, velocity, and maximum contact stress. Although DEM and MD p...