Why the LED Temperature is higher much than the experiment result?

[amy.jin]

Hi,

I used LED equipment in a chasiss case.

The LED part temperature is higher much than the experiment result especially when the parts is very close.

For example, the simulation result is 180 but the experiment result is only 130.

I think it maybe relative with the radiation model.

Is anyone can give some suggestion for this problem?

Thanks very much.

[Jon.Wilde]

Hi,

Have you set it up using this guide?

http://help.autodesk.com/view/SCDSE/2014/ENU/?guid=GUID-AC0AC8E5-269C-494D-AFE9-9FD56125B4BB

Are you running radiation?

Feel free to post a CFZ once you have implemented the guide.

Kind regards,

Jon

[apolo_vanderberg]

Amy - Natural Convection is very radiation sensitive / dominant

Without radiation i would expect our temperatures to over-predict by 15-30% depending on the model/materials and conditions exposed

If you do have radiation enabled, and you are still overpredicting I would go back and check material properties / meshing / setup assumptions for boundary conditions.