Hi all
When I mess my geometry it seems to me the following message: ERROR cartesian_grid\get_stl_data.f:671
ERROR: NO CARTESIAN GRID BOUNDARY CONDITION SPECIFIED.
AT LEAST ONE BC_TYPE MUST START WITH CG (FOR EXAMPLE CG_NSW)
RUN ABORTED
What is the reason for this problem to occur?
Thanks
What’s the boundary condition for stl wall?
If it is no_slip, you should use CG_NSW.
Hello, can you tell me something about CG_ Is NSW set there. I didn’t find that option in the boundary conditions.
Do you use stl for your simulations?
If yes, you can specify your wall boundary as CG_NSW.
If you are using the MFIX GUI, the bc_type keyword is set when you set the “Boundary Type” (and in the case of “mixed” conditions, “wall type”). If the region is an STL region, the CG_ prefix is automatically added, as you can see in this screenshot:
The popup help for keyword BC_TYPE does not mention the CG_ prefix because this is managed internally. However if you are writing .mfx files by hand you need to specify CG_MI, CG_PSW, etc.
– Charles
