[TommyM]

Hi All,

I am modeling a component with fins generating a power of 50 W.
I am not interested in how heat flows through the solid, so I consider only the boundaries of the finned component and focus the analysis on the heat transfer on surrounding air.

I tried two different approaches (see picture attached):

Case A) Heat source is applied to all the boundaries of the finned component.

Case B) I created a Shell Region from the boundaries of the finned component and apply the heat source to these shells.

As you can see on the picture, shells allow a uniform heat transfer, while case A exhibits an abrupt peak (irrealistic) of temperature between fins.

This trend is very odd, since the two approaches should be equivalent, more or less. This test makes me think the modeling of case A is incorrect.

Do you have any suggestions?

Thank you in advance,

Tommy