Procedure for DEM validation

Kiran Purushothama Keshavan

Hello all,

I have time dependent data from a few experiments for particle accumulation on a flat plate. I am about to setup a simulation on EDEM to see similar accumulation of powered matter on flatplate falling from a height. How do I go about calibrating my setup?
I'm going to use JKR V2 for my setup so, I'm particularly worried about the coefficient of restitution and surface energy for my simulation.
Duration of simulation: 405seconds
Expected accumulation: 6mm

Please suggest what I can do to reproduce the results from the experiment.

Regards,
Kiran

Stephen Cole

Hi Kiran,

The calibration approach would change depending on the scale of the material, this is discussed in the blog here which also links to the calibration webinar

EDEM Calibration 

Calibration Webinar

One area you will have to consider is the run time, 405 s is a long run for a calibration, ideally the calibration runs will be quick so you can run multiple cases and will represent the real case.  If the real case is a dynamic free flowing simulation then the calibration test should be similar.

If you can identify the main properties you want to vary and fix the remaining ones so you don't have too many inputs to vary at the same time this will help with the run times.

Regards

Stephen