CFDEM®coupling, LIGGGHTS® and ParScale - Announcements from the developers

CFDEMproject goes Lattice-Boltzmann:

We're following two main project lines:

1. LIGGGHTS-Palabos Coupling

In Greek language, παλαβός [palavos] means "crazy". Crazy people do amazing stuff, so we decided to couple to their code:
Palabos, http://www.palabos.org/
(btw, "Palabos" also stands for "Parallel Lattice Boltzmann Solver")

LIGGGHTS 2.1.2: (released 21 September 2012)

+ Andreas Aigner (JKU) added a first version of a hysteretic pair/gran/hooke/history/hysteresis style with cohesion. There is also a new tutorial case 'hysteresis' for that. Doc is to follow...
+ Andreas Aigner (JKU) also committed a patch for fix ave/euler/stress, improving support for triclinic boxes

LIGGGHTS 2.1.1: (released 7 September 2012)

+ Due to recurring problems in the latest releases, there is a complete re-work of edge and corner detection in mesh and update to the particle-mesh distance algorithm, with simpklifications, bugfixes and corrections for the parallel case. Thanks ot Chris Stoltz (PG) for sending lots of test cases that helped us find the source of the issues.
+ Added "aedges", "acorners" keywords to the dump mesh/vtk command to be able to visualize active/inactive edges and corners in a mesh.
+ Other small bug-fixes in parallel mesh handling.

LIGGGHTS 2.1: (released 30 August 2012)

+ Added a big SPH patch from Andreas Aigner (JKU) with improved efficiency and numerics for SPH. Also added a new SPH example
+ Included some re-work by Philippe Seil (JKU) for the particle-mesh distance algorithm where corner contacts were not detected correctly in rare cases. Thanks to Tapan Sabuwala (U Illinois) for posting an example that showed this.
+ Added support to specify the list of meshes to be dumped by the dump/mesh/stl and dump/mesh/vtk commands, rather than dumping all meshes in the simulation automatically.

LIGGGHTS 2.0.7: (released 23 August 2012)

+ Added a fix ave/euler/stress that calculates the correct stress for dense granular system and averages it over a Eulerian Grid (compute stress/atom neglects the contribution of the average velocity in the molecular diffusion term of the stress tensor). Also added a dump euler/vtk to dump the stress to VTK files. Thanks to Simon Schneiderbauer (JKU) for helpful discussions and to Andreas Aigner (JKU) for bugfixes and for adding code to make this feature work for triclinic boxes.

LIGGGHTS 2.0.6: (released 8 August 2012)

+ Fixed an issue with the recently added fix move/mesh/linear/variable command. Thanks to Christian Richter (OVGU Magdeburg) for finding this bug.
+ Added an error message if a user would provide a vector with length 0 for the fix gravity command. Thanks to user jooj for reporting this.
+ Fixed an issue that would prevent the correct particle-wall restitution coefficient to be pictured for particle-triangle contacs at the edge of two neighboring elements. Thanks to Chris Stoltz (P&G) for noting this deficiency.

LIGGGHTS 2.0.5: (released 3 August 2012)

+ Fixed an issue with fix insert/pack where option "n_particles_in_region" with "all_in yes" did not work correctly due to a round-off issue when the insertion volume was the whole box.
+ Performed a small re-work in container classes to make mesh communication more efficient.
+ Fixed an internal bug in mesh communication.
+ Fixed a bug in particle-wall heat transfer. Thanks to Kirk A. Fraser (Roche Consulting Group) for letting us know.

CFDEM coupling version 2.4.4 released (released August 01, 2012)
by DCS computing GmbH
changes and new features:
+ CFDEMcoupling from now on works with the latest version of LIGGGHTS (currently 2.0.4)
+ please find new git clone instructions for LIGGGHTS here.
+ nomenclature of tutorials is now adapted for LIGGGHTS 2.0.x
+ bugfixes

CFDEM coupling version 2.4.3 released (released July 30, 2012)
by DCS computing GmbH
changes and new features:
+ new IOModel "trackIO", which writes in other format, to allow for writing in "OpenFOAM(R)-lagrangian format". This allows now to visualize particle tracks using the particleTracks utility - thx to Mark
+ new postprocessing utility "writeUfluid", which writes local fluid velocity to lagrangian IO data written by trackIO - thx to Mark
+ bugfixes

LIGGGHTS 2.0.4: (released 20 July 2012)

+ Andreas Aigner (JKU) made an an update to the SPH models: he added 2D-sph-kernels and fixed a bug in the wendland kernel
+ Christian Richter (OVGU Magdeburg) contributed variable-style mesh movmement for fix move/mesh: linear/variable and rotate/variable
+ Fixed a bug in fix move/mesh where the mesh was was not rotated correctly when the rotation origin was not 0/0/0.
+ Fixed a typo in the fix wall/gran doc. Thanks to Sam Bateman (USNRL) for noting this.