[Ahmed A. Serageldin]

My case is modeling fluid flow and heat transfer through U-tube pipe, and I want to simplify it by making periodic condition between the outlet of right pipe and inlet of the second pipe as shown in the attached figure.
I used tetrahedral surface mesh element and sweep method.
Should I define the periodic condition in meshing or in Fluent? and how to do it?

[Andrea1984]

Hi Ahmed,

I think you are looking for the mesh/modify-zone/make-periodic command in the Fluent TUI. You will have to specify the IDs of the two boundaries that you want to make periodic and that you want to impose a translational (or rotational) periodicity. Once periodicity is imposed between the two boundaries you can use the Periodic Conditions tab to include additional features (such as an imposed pressure drop/mass flow rate).

Andrea

[Ahmed A. Serageldin]

Originally Posted by Andrea1984

Hi Ahmed,

I think you are looking for the mesh/modify-zone/make-periodic command in the Fluent TUI. You will have to specify the IDs of the two boundaries that you want to make periodic and that you want to impose a translational (or rotational) periodicity. Once periodicity is imposed between the two boundaries you can use the Periodic Conditions tab to include additional features (such as an imposed pressure drop/mass flow rate).

Andrea

Thank you for the quick reply, but when I do this it gives me an error that the two surfaces are not matched.