Learning Forum

[Joscha Hoppe]

Hello everyone,
i have some problems to mesh a geometrie for Ansys Fluent. The geometrie consists of fibres, which will be treated as a porous domain in Ansys Fluent (each one 12 mm wide, 0.3 mm high and around 450 mm log) and a fluid domain inbetween the fibres. I attached some pictures for better understanding.

Since the fibres are taper i have some overlapping contact regions. When i try to import the generated mesh into Fluent it says: The mesh file exporter could not resolve cyclic dependencies in overlapping contact regions. Please try to Repair Overlapping Contact Regions. 

How can i fix this problem?

I am very thankfull for any kind of help.

Kind regards 

Josh

[Rob]

Assuming you formed a multibody part in DesignModeler or used ShareTopology in SpaceClaim you should be able to delete the contact regions in Meshing. They're part of an automatic tool which will be confused by the domain scale: 0.3mm is very small relative to 450mm. They're mainly intended for Mechanical users, and historically the Fluent team turned off the auto-checks. 

The regions may then connect or try to duplicate/overwrite surface labels which triggers problems in Fluent. 

[Rob]

To add. It is possible to fix this in Fluent if the mesh reads in, but I'd advise going back to the geometry/mesh stage while you're learning. 

[Joscha Hoppe]

Thank you very much Rob!