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Ansys Learning Forum › Forums › Discuss Simulation › Fluids › DPM boundary UDF for a filter › Reply To: DPM boundary UDF for a filter

August 4, 2022 at 12:24 pm
jchen17
Subscriber

if (particle diameter > D_filter_size)

{

boundary condition is DPM_BC_REFLECT;

}

if (particle diameter < D_filter_size)

{

boundary condition DPM_BC_INTERIOR;

}

For interior DPM, it's just like the "porous jump" boundary, interior for DPM, and particles can pass through the boundary without anything happening ("filter" surface in my figure).