Thermal simulation in a closed enclosure

Simulation
1

Hi all

I'm having some issues with Solidworks Simulation. Let me explain my case:

I have an aluminum case (waterproof) inside which there is a component that heats up. I want to know the deformations/displacements of the other parts inside this case.

•I modeled the component that heats up as a thermal power of 10W.

•I put convection on the outside of the case (5w/(m². K)).

I therefore obtain a temperature and then displacements (via a static study) inside my case.

However, my assumptions don't take into account the convection inside the case... I guess the "Thermal Power" load is only processed in conduction in my case.

Should I add convection inside? With what exchange coefficient since my case is closed? The temperature inside the case will increase, should I switch to a transient study then? 

I would also like to know the air temperature inside the case (to compare with real tests).

Since I don't have airflow, I can't seem to create a study with Flow Simulation.

I hope I was clear, thank you for your help!

2

Hello 

I have exactly the same problem but on another software. 

If anyone can provide answers, I am listening. 

Should we rather do a stationary, transient or fluid mechanics thermal study? 

 

Yours sincerely. Thanks in advance 

3

Happy reading :-)

https://depozit.isae.fr/theses/2004/2004_Toulouse_Marie-Laure.pdf

1 Like
5

Thank you first. 

This is indeed a good start to understand how the phenomenon works. 

However, I admit that it's more at the software level that I have a problem. I can't fake it.