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EDEM Creator
EDEM Creator is the pre-processor for creating an EDEM simulation model, including setting up equipment and defining the generation of bulk materials.
Creator Tree-Bulk Material
Creator Tree-Bulk Material allows you to add bulk material and bulk material particle shapes to a model and define their interactions.
Size Distribution for Particle Shapes
You can specify the size distribution for the particle shapes in each Bulk Material including Meta-Particles.

Welcome
What's New
New features and enhancements available in EDEM.
Release Notes
This document contains information about the EDEM release, such as key features and enhancements, bug fixes, and known issues.
About EDEM
EDEM is a high-performance simulation software for bulk and granular materials.
Get Started with EDEM
The EDEM user interface comprises three icons for each simulation component - Creator, Simulator, and Analyst.
EDEM Creator
EDEM Creator is the pre-processor for creating an EDEM simulation model, including setting up equipment and defining the generation of bulk materials.
- Creator Tree-Project
  Creator Tree-Project allows you to define the title and description for the simulation.
- Creator Tree-Bulk Material
  Creator Tree-Bulk Material allows you to add bulk material and bulk material particle shapes to a model and define their interactions.
  - Add Bulk Material to a Model
    A Bulk Material comprises the particle bulk material properties, particle shape, and size distribution.
  - Add Bulk Material Particles
    You can add bulk material particle shapes such as Multi-Sphere, Polyhedral, and Sphero-Cylinder.
  - Create and Define Meta-Particles
    A Meta-Particle is a collection of individual Multi-Sphere or Sphero-Cylinder particles bonded together using EDEM’s Bonding V2 contact model.
  - Size Distribution for Particle Shapes
    You can specify the size distribution for the particle shapes in each Bulk Material including Meta-Particles.
  - Material Starter Packs
    The Soils Starter and Powders Starter packs are installed with EDEM.
  - Materials database
    You can store and transfer material, interaction data, Meta-Particles, and Material Block data in a database file between simulations.
- Creator Tree-Equipment Material
  Creator Tree-Equipment Material allows you to add equipment material to a model and define interactions between materials.
- Creator Tree-Geometries
  Creator Tree-Geometries allows you to use Geometry sections to construct the environment in which your bulk material interacts.
- Creator Tree-Environment
  Creator Tree-Environment allows you to define global settings for the simulation in the Environment section.
- Creator Tree-Physics
  Creator Tree-Physics allows you to add Physics interactions.
EDEM Simulator
EDEM Simulator is a powerful solver used for fast and efficient simulations.
EDEM Analyst
EDEM Analyst is the post-processor used to analyze and visualize the results of your simulation.
EDEM Contact Models
A Contact Model describes how elements behave when they come into contact with each other.
EDEM Cal Utility
EDEM Cal is a utility which works with EDEM and is designed to assist in performing calibration.
GPU CUDA Guide
The EDEM CUDA GPU module uses the latest General Purpose Computing on Graphical Processing Units (GPU) technology.
Programming Guide
The EDEM Programming Guide describes the EDEM API.
Coupling Interface Programming Guide
The Coupling Interface Programming Guide provides an overview of how to use the EDEM Coupling Interface to couple with a generic CFD code and/or Multi Body dynamics codes.
EDEMpy
EDEMpy is a Python library for accessing EDEM data from .h5 files (the underlying EDEM file format). EDEMpy does not require prior knowledge of advanced programming.
EDEM Solver Capabilities
EDEM contains four solver engines.
Appendix
This section provides additional information about how to estimate simulation time, supported EDEM File types, attribute definitions, and so on.
EDEM Terminology
Definitions of terms used in EDEM.
References and Bibliography
This section cites the contributions made by various authors and sources that have been used as reference material for EDEM, and the specifics of how they have been applied can be found in the individual contact model sections.

Size Distribution for Particle Shapes

You can specify the size distribution for the particle shapes in each Bulk Material including Meta-Particles.

The scaling options for the size distributions are relative to the defined particle size.

'Scale by Radius’ scales all length dimensions in direct proportion to the specified value.
'Scale by Volume’ scales all length dimensions to the cube-root of the specified value.

The following size distribution options are available:

Fixed
All particles are created with an equal size and volume.
Lognormal
Particle shapes have a lognormal distribution. The average (mean) particle radius or volume and the standard deviation must be defined. The mean and standard deviation can be defined using a logarithmic or linear scale. With a logarithmic scale, the input values are exponential functions. For example, a mean value of 1 in the logarithmic scale denotes an actual scaling of 2.718 in the linear scale.
Note: The mean and standard deviation should both be normalized - the mean is the ratio of the mean to the input particle radius or volume and similarly for the standard deviation.
Normal
Particle shapes have a normal distribution. The average (mean) particle radius or volume and the standard deviation must be defined. The mean and standard deviation should both be normalized - the mean is the ratio of the mean to the input particle radius or volume and similarly for the standard deviation. Use the capping options to cap the maximum and minimum particle sizes.
Random
Particle radii are randomly sized within a set size range. For example, with a minimum size of 0.5 and a maximum of 1.5 and scale by Radius selected, particles no smaller than half and no bigger than one-and-a-half times the size of the standard size are produced.
User defined
For mass generation of particles only, input a scale and percentage of total mass to be generated at that scale. Data can also be imported from CSV files where the first column is the scale and second column is percentage of mass. This data can also be pasted directly into the table. Percentage mass values must add up to 100%. User Defined size distributions can only be used with Mass Generation factories, number of particles (total number or number per second) factories are not supported.