[fluenter2015]

Hi everyone:

I am simulating air flow over an airfoil.
Most of the tutorials use a "top-down approach, where you create one simple geometry for the whole domain in the first place and then splits it into smaller blocks" (from one to four in my case)

However, this method didn't worked in my case. Therefore, I used a second option known as bottom-up approach, where you create a separate sketch for each of the four blocks you want to have in the end.

Bottom up-approach worked. However, when I define boundary conditions, the edges which contact the 4 surfaces (you can see them in the end link that I attach) are defined as "wall" and I can´t change them to "interior".

Is there any solution? Any idea on how on how to solve this problem?

I really appreciate any help you can provide, I am very frustrated.


Here, you can see my mesh:



And these are tree parameters:





*In named selections, "interior" is defined by four separated faces.

Finally, here You can see the boundary conditions: