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

LIGGGHTS 1.4.2 (released 8 September 2011)

+ Preparing for merging some basic LIGGGHTS stuff into LAMMPS together with Steve Plimpton (Sandia). Therefore, some cosmetic changes in filenames and class names have been performed. E.g. renamed fix property/peratom class to fix property/atom, and changed fix property/global keywords 'peratomtype' and 'peratomtypepair' to 'atomtype' or 'peratomtype'. However, the old keywords are still supported.

UPGRADE recommended.
+ new drag force model following Koch&Hill
+ new model for convective heat transfer (particle fluid)
+ density!=1 bug fixed
+ new solver cfdemSolverPisoScalar for CFD-DEM simulations including temperature equation
--> convective particle-fluid and conductive particle-particle heat transfer
+ new test case for cfdemSolverPisoScalar for CFD-DEM simulations including heat transfer
+ new functionality for post-processing in (pseudo) parallel (functions.sh)
+ bugfixes

Our next CFD and DEM course is fully booked.
The next course will be held in about 6 months (details tba on www.cfdem.com)

In the meanwhile I 'd like to invite you to use our forum to get started with LIGGGHTS and CFDEM.

Kind Regards,
Chris

LIGGGHTS 1.4.1 (released 4 August 2011)

+ Fixed a bug in the region tetmesh command revealed by a testharness run by Stefan Amberger (JKU)

LIGGGHTS 1.4 (released 3 August 2011)

+ Added a new SPH (Smoothed Particle hydrodynamics) modelling capability based on the work of Andreas Aigner (JKU). See example here. Also added a new example "sph".
+ Fixed a rare bug in the probability distribution implementation. Thanks to Andre Katterfeld (Univ. Magdgebug, Cepartec GmbH) for sending an example that showed the bug.

CFDEM coupling version 2.0.4 beta (released July 18, 2011)
UPGRADE recommended.
+ new force model Archimedes (lift force)
+ new voidfraction model bigParticles
+ new solver cfdemSolverIB for resolved CFD-DEM simulations (thx to Alice Hager)
+ new test case for cfdemSolverIB for resolved CFD-DEM simulations (thx to Alice Hager)
+ modifications to momentum Coupling Model (minor changes in couplingProperties necessary-see test cases)
+ bugfixes

LIGGGHTS 1.3.3 (released 12 July 2011)

+ Fixed a bug in fix wall/gran - thanks to Stefan Beinert (TU Braunschweig) and Thomas Wagner (TU Freiberg) for reporting this in the forum
+ updated the restart2data tool
+ fixed a couple of minor memory issues

CFDEM coupling version 2.0.3 beta (released July 7, 2011)
UPGRADE recommended.
+ new liggghtsCommandModel class allowing to execute liggghts commands within cfdem simulation
this feature is controlled via a new dictionary: case/CFD/constant/liggghtsCommands
+ new version information popping up when running case - hardcoded in cfdemCloud/versionInfo.H
+ bugfixes

+ compatibility to 2.0.0

A new version of the CFD-DEM coupling was released.

Main changes are the new "HopperEmptying" test case. You can run this case either purely with LIGGGHTS or as coupled CFD-DEM simulation.