EDEM 2017 tutorial: Setup simple simulation of DEM particles

Setting Up a New EDM Deck

Introduction to the Software

• The speaker introduces a new version of the GEM theater from 2017, highlighting its user-friendly features compared to older versions.

• A project is initiated with the title "Brazil nutter fetch effect," focusing on simulating bulk material.

Adding Bulk Material

• The process for adding bulk material is explained, including right-clicking and using a wizard for selection.

• Specifications such as bulk density (1500 to 2000 kg/m³), angle of repose, coefficient of restitution, and static friction are discussed.

Particle Configuration

Defining Particles

• The speaker calculates properties like mass and volume for particles using an automatic feature in the software.

• A larger particle is created first, followed by another similar particle added from libraries with specific size adjustments.

Geometry Setup

Creating Geometry

• A slender cylinder geometry is defined with specific dimensions (point three).

• An injector is introduced as a virtual component that will inject particles into the simulation environment.

Factory Settings

Configuring Particle Injection

• A factory setup allows for adding 1000 particles randomly positioned and oriented within specified limits.

• Adjustments are made to particle density settings before saving the project file.

Simulation Parameters

Running Simulations

• The simulation begins after setting time parameters; vibrations are applied to the slender cylinder geometry.

• Adjustments are made to domain size and frequency settings during simulation trials.

Finalizing Simulation Results

Observations and Adjustments

• The Brazil nut effect is observed where particles segregate based on size during simulation execution.

• Final adjustments ensure that bigger particles align visually with smaller ones in the output.