Update on non-spherical DEM?

bergantz · February 22, 2020, 10:39pm

Greetings, can we get an update on progress of smooth (not glued spheres) non-spherical DEM? Has it been implemented in DEM-CFD (instead of just granular) and if so status of validation? I ask about validation as the closures for non-spherical objects is the subject of a lot of discussion and uncertainty. Thank you.

gaoxi · February 24, 2020, 6:42pm

The superquadric particle method for non-spherical DEM/DEM-CFD in MFiX is still under development as a lot of work is needed, including implementation, parallelization, verification and validation.See one example below: M&M chocolate candies static packing in a cylindrical container.

bergantz · February 24, 2020, 7:52pm

Thanks for the prompt reply. Looks promising. Any estimates on release, maybe by the end of 2020? Also what are plans for implementation in the CFD part regarding closures, etc.? We are really excited by this important development!

gaoxi · February 24, 2020, 9:10pm

Thanks. The release date is not available yet. For CFD coupling, the drag force (maybe lift force also), heat/mass transfer/reaction will be implemented.

ywj12345 · February 25, 2020, 3:29am

That’s really cool! I’m looking forward!