Internal flow ?

Hello there,

I just downloaded a trial copy of your software and am trying to setup an internal flow simulation. I have seen some references on here that doing this requires a solid model of the internal volume of the part. Is this true? This part is rather complex, modeling up an internal model, let alone one that rebuilds quickly through changes, would be difficult at best.

Any other way to do it? I tried to create walls out of the internal surfaces and setup inlet / outlet boundaries, but I couldn't seem to get it to work.

In SW Sim. Flow I just have to cap off the inlet / outlet boundaries and it calculates the internal volume.

My part is a little bit like this: