I've done a simulation with three thousand granular particles in a container with a blade stirring them around. See video on the URL below:
https://docs.google.com/leaf?id=0B2EIcnb16wvuZWRmZWRiYTktMGQ4OS00OWMzLTk...
If you look closely, you see that some of the particle's got a "popping" behaviour, it's like small explosions shooting away some of the particles. What am I doing wrong?
Attached are the compressed input script + STL files.
Regards,
Stefan
| Attachment | Size |
|---|---|
 liggghts130191695737.tar_.gz | 83.35 KB |
ckloss | Mon, 04/04/2011 - 15:20
what version are you using?
what version are you using? do you get warnings during the simulation?
Christoph
schteppe | Tue, 04/05/2011 - 09:32
LIGGGHTS 1.2.5-beta based on
LIGGGHTS 1.2.5-beta based on lammps-10Mar10
Didn't get much warnings during the run command, but I got "INFO: Maxmimum number of particle-tri neighbors >10 at step 16939, growing array...done!". This shouldn't be a problem for what I know...
Log can be reached here:
http://upload.steffe.se/files/20110405/log.liggghts
ckloss | Tue, 04/05/2011 - 09:43
please upgrade to the most
please upgrade to the most recent version (1.2.8 to be released today), and if the problem persists, let me know
Also, your time-step is pretty high (probably too high)
Christoph
schteppe | Tue, 04/05/2011 - 13:43
I upgraded to 1.2.7 from the
I upgraded to 1.2.7 from the liggghtsdev git repos and set the timestep to 0.00001. Looks completely fine now!
Thanks for the help and for all the great work you've put into this software :)
Stefan