I am trying to find flow arouns an object. I have said object inside a block. The block is air, and the object is steel for now. Under turbulant flow, I cannot select the objects walls inside the block of air to define as the walls. It will, however, let me select the outside of the block walls as walls. The object si made up of several cones and I formed a union wih all of them. Im sure this is an easy fix, im a begginner at this. Thanks!
Im attaching a screen shot of my work, I cannot upload file, it is too big