Fluids

Fluids

Fluent does not recognize faces

    • Jeroen
      Subscriber

      Hello,


       


      I am trying to generate a mesh for a cylindrical geometry. I have succesfully been able to generate this mesh which looks as follows:



      The cross-section in the length direction looks like this:



      As can be seen the mesh consists of 5 different parts which are all connected to each other.


      However, when loading this mesh into Fluent I get several issues regarding the boundary conditions. In the BC list it shows a lot of walls which, when I click on display, do not show. Only the last item in the list is able to display, but it shows the entire mesh. This should not be the case since I need to define my inflow and outflow boundaries, which I am currently unable to do.


      I have also tried separating this wall-fluid boundary by using a 90 degree angle. This however does not work since some faces are still connected to each other and cannot be separated.



      I have also tried setting up the mesh in a slightly different way such that it consists of only 2 parts, though this does not seem to make any difference at all.


      How can I fix this issue, such that I can define my inflow and outflow boundaries, as well as correctly set my walls.

    • Rob
      Ansys Employee

      You didn't do share topology in SpaceClaim. Those walls are Fluent's way of dealing with non-overlapping nonconformal interfaces. Go back and fix the geometry and they should disappear. 

    • Jeroen
      Subscriber

      This indeed gets rid of the non-existing walls. However, it does not solve my main issue that fluent does not recognize the different faces of my geometry. How can this be solved?

    • DrAmine
      Ansys Employee
      Creating named selections in mesher is an another step.
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