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Old   May 4, 2010, 05:07
Default Open Source DEM with LIGGGHTS: Release / classes
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Dear all,

I am pleased to announce the official launch of / along with the release of the Open Source Discrete Element Particle Simulator LIGGGHTS, version 1.0.

LIGGGHTS stands for LAMMPS Improved for General Granular and Granular Heat Transfer Simulations. As this name implies, it is based on the Open Source MD code LAMMPS. LAMMPS is a widely used, well documented, high performance simulator written by Steve Plimpton, Paul Crozier, Aidan Thompson and others at Sandia National Laboratories, Albuquerque, US ( LAMMPS also offers a "GRANULAR" package for DEM simulations.

LIGGGHTS now brings these DEM features to a new level. The following features have been implemented on top of the LAMMPS "GRANULAR" features:
+ A re-write of the contact formulations, including the possibility to
+ define macroscopic particle cohesion Import and handling of triangular
+ meshes from CAD A moving mesh feature Improved particle insertion A
+ model for heat generation and conduction between particles in contact

More features, such as improved handling for non-spherical particle, a 6 degrees of freedom solver for arbitrarily shaped bodies and wall stress analysis, are currently under development. Also, an efficient parallel coupling to the OpenFOAM(R) framework is under development.

LIGGGHTS will stay "backward compatible" to LAMMPS, meaning in can use all powerful LAMMPS features.

For a complete list of features, videos, as well as downloads and tutorials, please refer to /

If you are interested in learning more about DEM with LIGGGHTS, there will be 2 classes (each for 3 days) held in the city of Linz, Austria. They are scheduled for June 9-11 and September 22-24. If you are interested in joining one of the classes, please get more info at

Feel free to register for free and download LIGGGHTS 1.0 from our website. For any question that may arise, please use the provided discussions forums.

Kind regards,

Christoph Kloss
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