[Haroun]

Hi everyone,


So I am new to OpenFOAM and I have this simple system composed of two injectors (water and air) and a mixing room. I have in total 6 .stl files which are described by their names :



'INLET_AIR'
'INLET_WATER'
'WALL_AIR'
'WALL_WATER'

'OUTLET'
'PLENUM'


I've just done the meshing part and everything seems to be OK. Now, I only want to set the surface of 'INLET_WATER' as the inlet surface but I absolutely have no idea of how to proceed since in every tutorial I did they define the inlet and outlet as faces of the bloc generated from blockMesh.



What is the procedure to set a face of the geometry as the inlet and not a face of the bloc ?