Pressure inlet with particle

MFiX How to
#1

Why is it that when the boundary is set as a pressure inlet, particles cannot enter through this boundary? When I set the boundary to mass inflow, everything was fine. However, if it is set to pressure inlet, an error will be reported: Error from check_data/check_bc_dem.f:137 Error 900: Unsupported boundary condition specified with DEM simulation: BC_TYPE(1) =
PressureInletWithParticle2.zip (152.7 KB)

#2

Please, can someone help me? Is there any way to use pressure inlet and pressure outlet in the presence of particles?

#3

If you want particles to come in then you must use a mass inlet BC.

#4

Thanks for your reply and help. I don’t necessarily want particles to come in from the boundary, and I’m fine with having particles initialized in the domain or using UDFs to generate particles, but even then, pressure inlets don’t seem to be allowed. Is there a solution?

#5

I commented out the error code in the check_bc_dem.f file and set the particle volume fraction of the pressure inlet to 0. The calculation seemed to work.