Flow Simulation with NO fluid solving
I have a simple assembly and want to look at heat transfer within.
I know the external surfaces will lose heat at 12 w/m2k, so...no external flow solution needed
There is a small internal cavity with air, but it's so small that conduction is all that matters....no internal flow solution needed. I define a part for that air space, and apply the 'solid' properties of air.
In general settings I specify internal flow solution, and turn on conduction in solids.
The computational domain properly locks coincident with the orthogonal external surfaces.
Now my troubles begin.
I can't assign the external faces and apply 12 w/m2k. I suspect this is because the computational domain is coincident, because if I run an external flow solution, and the computational domain is external of these surfaces, I can pick the surfaces and assign an h. Not always BTW.
If I avoid any external BCs, the tool then complains about leaks. This is interesting since everything inside the computational domain is a solid as I've defined it. Even the air is just a solid with air's thermal conductivity.
I know this is a fluid solving tool, but shouldn't we be able to 'turn off momentum' equations in the solver?
Can SW Flow Simulation be used for conduction and radiation only problems?