Thanks for the feedback. I just had a look at the most recent PERRINN project in your profile, specifically PERRINN F1 V4, Simulation 1 kE, Run 1. I hope it’s the one you’re referring to, seems to fit your description. I did not find an inconsistency in bc definition. For bounding box faces we have:
zero gradient for solid_0_solid_0_face_0, 1, and 3 (outlet and slip)
wall function for solid_0_solid_0_face_2 (wall)
fixed value for solid_0_solid_0_face_4 (inlet)
symmetry for solid_0_solid_0_face_5 (symmetry)
which appear to be correct. Would you please have a look and let me know if this is the setup you were going for?