Thank you for your reply Rob.
Does how the interface is set up change this? It's currently a multibody part ( Inventor .ipt) which I take into Spaceclaim for clean up. I delete duplicate faces in Spaceclaim so the interfaces becomes single surfaces which Fluent then creates shadow walls for (I think, bit unclear about how this works). If I dont delete those duplicate faces would there be two walls for each interface in Fluent so I can attach +ve flux on the fluid side and -ve flux on the solid side?
You are navigating away from the AIS Discovery experience