DEM stands for Discrete Element Method.
Wikipedia article on DEM
WHAT IS LIGGGHTS®?
LIGGGHTS® is an Open Source Discrete Element Method Particle Simulation Software. It can be used for the simulation of particulate materials, and aims to for applications it to industrial problems LIGGGHTS® is currently used by a variety of research institutions and companies world-wide.
- Import and handling of complex geometries: STL walls and VTK tet volume meshes
- Moving mesh feature with a varierty of motion schemes and a model for conveyor belts
- Force and wear analysis on meshes as well as stress-controlled walls
- A variety of particle-particle contact implementations, including models for tangential history, non-spericity and cohesion
- Interface to easily extend contact implementations
- Heat conduction between particles
- Particle insertion based on pre-defined volumes, meshes and particle streams from faces as well as particle growth and shrinkage
- Flexible definition of particle distributions
- Smoothed Particle Hydrodynamics (SPH) fluid models
- Output to the widely used, open source VTK data format
- A strong eco-system of fellow simulation engines for co-simulation, efficienty and tightly coupled via MPI: CFDEM®coupling for CFD-DEM simulations and Lagrange-Euler coupling in general and the simulation engine ParScale for the modelling of intra-particle transport processes
LIGGGHTS® inherits all the abilities of its "ancestor" LAMMPS:
- An easy-to-understand structure of the code
- A flexible scripting language as input to the LIGGGHTS® engine, allowing efficient usage including parameter studies
- Highly scalable, efficient parallelization using MPI (message passing interface)