[Shamoon Jamshed]

Hello CFD experts,

I want to model a flow with periodic boundaries. The flow is rotational as well as translational periodic in nature. (Please see attached figure). Therefore I have modelled a 3d helical periodic segment. In Fluent, under Periodic conditions, I gave MFR and Bulk temperature as 298.15. While the outer wall heat flux is 298.15 K. The contours formed for temperature are pretty strange. Since the geometry contains helical shape, the translation distance in the figure is up to 1 pitch length (12.7 mm), which is for helix angle 60 degree. Please help me, why the temperature is not resolving right? Will, the boundary conditions "velocity inlet" and "pressure outlet" (instead of translational periodic) help?

[niddaas]

Hello Shamoon Jamshed,

Now we just finished the rotating body problem using MRF (moving reference frame).

Please contact us at http://www.faedaworks.com/contact-form/
to give more detail about the problem.

Hope we can help you.

Thank you,

Saaddin Nur

[Shamoon Jamshed]

I think you did not understand my problem correctly. My problem has nothing to do with MRF. The flow is rotational though, but it is steady flow.The geometry is rotational as well as translational periodic.

[niddaas]

Sorry for the misunderstanding. But, I think with no mrf the simulation will be easier to prepare.
Previously, we've finished ahmed body validation with error of 99.98%. Hope the experience will help us to solve your problem.