Meshing a 3d external flow..
 

Help...
I am trying to mesh the following scenario....
Hot air at 1000k flowing over a circular chain link at 300k. It has to be in 3-d. I tried creating a chainlink inside a box and defininig the inlet, outlet and wall boudary conditions respectively.

The problem i'm having is with the mesh. Anytime i mesh the box and read the file on fluent, my chain link seems to be non existent. Does anyone know how to fix this problem???

THanks...

did you substract the chain link from the box?