Simcenter STAR-CCM+ DEM particle filter across interface
Summary
In this example you will see how to setup a filter across porous baffle interface to filter particles of specific size
Details
| Attachments: | DEM_Filter.sim (11 MB) |
A simple geometry is created in 3d cad as shown below having a lower and upper part separated by interface acting as a filter
Mesh has been generated with 50mm target size as shown below
After assigning the parts to regions, convert the interface to porous baffle interface and set the phase conditions for both inlet and outlet to phase impermeable to particles
Following physics models selected for the simulation. Two lagrangian phases has been selected named as large and small size particles. As of now you cant filter different particle diameters in single phase across the interface, you need have multiple phases to filter the particles based on the DEM mode and Transmit criteria set across the interface as shown here. It means small phase transmit across the porous baffle interface, large phase set to DEM mode.
Two random injector are created to inject two phase particles with normal distribution with mean size of 30mm as shown
Create a solution history to store particle field functions and phases, plane sections if any
Create a histogram plot to display the frequency of different diameter particles in the domain
Below is the particle animation and histogram plot display the number of particles in the upper and lower part of the domain also particles that passes the filter represented by threshold. You can see very few lower size particles crosses the interface remaining all stays in the upper domain only.
Please find the simulation file attached here