create openings in a room
 

Hi all,

I am new in the forum and in ANSYS Fluent as well. I am trying to create a simple box (room) and two openings to simulate the flow through the windows. However I haven't manage to design it.

I am using a 3D box as the room. When I am designing the rectangular and extrude it to create the window it seems that it removes the material from the box from the one side to the other which is not what I want.

I have attached two pictures.

I am aware that it is probably a really simple case but keep in mind that I am a 2nd day user.

Thank you !!!