[msatrustegui]

Hi everyone,

I'm trying to simulate a solid cilinder situated inside a bigger cylinder, which is filled of air.

The inner cylinder has an energy source, so it warms and the heat is evacuated from the inner to the outer cylinder by natural convection.

Here comes the question, I'm trying to simplify the model by representing only part of the full model (only 30º out of 360º). How do i have to model the side walls?

When i define them as symmetry, i do not get the result i expect. The temperature along the tangential direction should be constant, however it gets colder at the extremes. Do i have to define the walls as periodic instead of symmetric? How do i define the periodic condition?

Thanks for your help.

PD: I've attached an image of the results i'm getting with symmetry conditions in the side walls.