LIGGGHTS 1.0.3 (released 03. June 2010)
BACKWARD COMPATIBILITY: You will not be able to use restart files from previous version with 1.0.3!
Version 1.0.3 comprises a new 'conveyor belt' wall model added to the fix mesh/gran command.
The mesh/gran can be assigned a constant velocity, but is not moving itself. This can be used to mimic a conveyor belt for meshes that are flat or curved in one direction . Also added an example for the conveyor belt model
Version 1.0.3 comprises the following new features for particle insertion.
A new fix pour/dev command has been added which will sooner or later replace fix pour. It is quite similar to fix pour, but some major re-works allow the following new capabilities:
1) With fix pour/dev, you can now define conditions for mass-flow rate and total insertion mass.
2) The insertion height probability has been re-worked to be in accordance with the velocity distribution
3) Moreover, fix pour/dev has now restart capability, which means that it is not necessary to change the fix parameters in a restarted simulation run.
4) The insertion now takes place in a way that allows higher volume fractions than the old fix pour command for poly-disperse simulations.
5) The fix pour/dev command can now takes discrete particle distributions, defined by a new fix particledistribution/discrete. These distributions are based on mass % (as opposed to the number density based distributions in the old fix pour, which are less common). The fix particledistribution/discrete can be fed with one or more fixes of type particletemplate/sphere (also new). Moreover, continuous distributions of diameter and density within a particle template distribution are possible.
Also added an example to show how 'fix pour/dev' works.
Version 1.0.3 contains the following bug fixes:
Fixed an issue with growing shear history
Fixed a bug that obstructed correct particle shear history simulation restart in some cases when CAD-imported geometry was used
Fixed a bug that for some cases CAD imported geometry was not recognized during the first run - thanks to Martin Köster (University of Düsseldorf)
Some debugging code was left in 1.0.2 so that some simulations crashed at time-step 320000. This issue is now fixed.
Fixed 2 issues with importing CAD geometry: STL file face normal vectors are now automatically normalized.
Fixed an issue with rotating imported geometry around the z-axis - thanks to Christian Grohs (Plansee SE).