thermal analysis of a heat sink for led lamp

[FEA_3D]

Good morning to all

I have to see how temperatures are distributed in a heatsink for a lighting circuit. . .

the particular is so composed. .

heatsink that is also structure of the lamp.. .
niche for circuit (+lights led) inside the heatsink. . .
glass with seal as upper casing. . .

all in the air stops room temperature. .

I thought of setting the following settings.. .

- natural convection of all walls with the outside
- temperature on all board sup. (90°)

What can I insert into the inner surface of the glass as a set?? natural convection in air at 90°C is correct?

Can I neglect the irradiation? ?

once obtained results.... that can be 90° on the surface behind the heat sink near the board.. .
and about 70° in the outermost areas of the dissoper.... what can I conclude? ... that the detail does not reach all the maximum temperature in all areas therefore dissipate?

I don't know how to reach a conclusion for this calculation....

Thank you.

 

[meccanicamg]

the heat dissipation you see it with the module floworks called now flow symulation. years ago I did the same study for my friend who was planning for a dealer of street led lamps for gallery. Here we imposed a low air flow in the tunnel calculating a little tunnel aspirators and some logic.
If the environment has 30 degrees and your light has 90 degrees with the thermal study in fluid vein you will see in time that you will get a balance temperature. That's what you're gonna get on with. if it dissipates you will have temperature below 90 degrees.... otherwise he will go up.
between the various things you could see if you can define the amount of heat generated and not the temperature. I don't remember if you can do it as a simulation.