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How to define inlet and outlet for faceted geometries?

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Old   October 8, 2025, 12:28
Default How to define inlet and outlet for faceted geometries?
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Hi there,

I am using ANSYS Fluent to do conjugate heat transfer on a geometry, which is a porous media. This geometry is imported to ansys, as a .stl file, and it is composed of many faceted bodies. I have converted this geometry into a solid body, but still, the faceted bodies exist. So, my question is for such a geometry, how can I select a single face (i.e., composed of many facets), to name the inlet, and outlet parts?

I have attached a picture of this geometry to this post.

Screenshot 2025-10-08 112459.jpg

Thank you very much for your help, in advance.
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ansys mesh, faceted bodies, fluent

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