[Neusier]

Hi there,

I'm new in this forum, so first: hello everyone.

I have a little and I think that easy to solve problem. It's my first time using CFX and I am lost.
The question that I have its simple. How do I set materials to the CAD models? I mean, I am designing a duct for heating, a simple one: just a prismatic duct with an inlet and outlet.

If I suppose that the CAD model its the whole fluid I get the solve without many problems, but the point is that I want to assign a material to the solid duct so the heat energy lost happens.

I have done all the Ansys examples, but I dont get the real answer. What do I have to do? It's just doing two CAD models: one as the duct and the other as the fluid, and then creating two domains and setting the materials? Its possible to do it with just a solid? Giving it a thickness?

Im sorry if my explanation its not very clear, but my English isn't enough to explain like I'd want.

[joey2007]

You have to mesh both domains and set the type of one as solid and of the other as fluid. There is one tutorial showing the setup (not the meshing).

For interfaces you can set a thin wall with a thickness.

[Neusier]

Originally Posted by joey2007

You have to mesh both domains and set the type of one as solid and of the other as fluid. There is one tutorial showing the setup (not the meshing).

For interfaces you can set a thin wall with a thickness.

So, I create the empty duct and then an inside solid as the fluid? Inside the empty duct, I mean.

Which is the tutorial? The Ansys tutorial about a HeatSink?

[ghorrocks]

There are a few tutorials which do solids with heat transfer. Have a look at them. You set up the fluid domain as one domain, and the solid domain as another and link them with an interface.