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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-Environment
Creator Tree-Environment allows you to define global settings for the simulation in the Environment section.
Define Linear Periodic Boundaries
You can define Linear Periodic Boundaries to control what happens to a particle once it leaves the domain.

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.
- 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.
  - Define the Domain and Geometry
    EDEM allows you to run simulations in the model domain area. You define the domain and Geometry in the Environment section of the Creator Tree and is indicated by the red box in the Viewer.
  - Define Dynamic Domain Conditions
    You can define a geometric object as a Dynamic Domain to make all the material inside the object active and exclude any stationary material outside the object from calculations, which speeds up simulation.
  - Define Cylindrical Periodic Boundaries
    You can define Cylindrical Periodic Boundaries within the domain using the axis from a rotational kinematic or a vector based on a starting or end point.
  - Define Linear Periodic Boundaries
    You can define Linear Periodic Boundaries to control what happens to a particle once it leaves the domain.
- 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.

Define Linear Periodic Boundaries

You can define Linear Periodic Boundaries to control what happens to a particle once it leaves the domain.

To define Linear Periodic Boundaries:

In the Creator Tree, expand the Environment menu and then select Boundary Conditions.

Any particles exiting the boundary along the Y axis will enter the simulation on the opposite boundary. Linear Periodic Boundaries also allow particles to interact with material on the opposite side of the boundary. In the following example, the particle on the left will be visualized as a whole on the left side of the screen until its center point passes the boundary. However, the particle will still contact material on the other side of the boundary as follows:
Select any of the X, Y, or Z checkboxes to enable the periodic boundaries in that direction. You can select more than one direction.
If the option is selected for a particular direction, any particle leaving the domain in that direction will instantly re-enter it on the opposite side.
Select the Remove Domain Gap For Periodic Boundaries checkbox to resize the domain to the exact extent of the Geometry.
By default, to prevent particles from being deleted from the simulation when there is a significant overlap with geometries at the boundary of the domain, EDEM provides a little space around Geometries. In order to have linear periodic boundaries, this gap must be filled. When applying this condition, this should be done in the linear boundary direction.