hello everyone! i want to create a wall defined only by cells. The difficulty here is that i don't want to define a second cell zone. Itested granular flows, initialize patch e.t.c., but i couldn't! Does anybody know something about it? Thanks

Try this: Define the wall area as interface boundary in Gambit. After meshing, and import the mesh into Fluent. You can change the interface boundary to wall boundary. Now you do not need to specify the boundary condition at the wall.