Reply To: Heat transfer in thin walls – Shell Conduction

[Rob]

You need to connect the faces in geometry. Fluent knows that the wall & wall:shadow are paired so unless you mess with the "coupled" setting it will work everything out for you. What I can't say (check the manual) is how layer 1 and layer 5 are arranged ie I think layer 1 will be next to the fluid whos surface you pick (wall or shadow).