Learning Forum

[Juhani Manninen]

Hi

How to create a simulation examining the internal temperature of a cable, where the thermal radiation from adjacent cables and heat transfer through air affect each other. The power loss of one cable is 50 W/m. The cables are in the same space where heat is transferred through air and radiation. The cooling effect of air is modeled as natural convection around the conductors. Can such a simulation be achieved in 2D using the Steady State Thermal module? Are there any examples available, or could someone guide on how to get started?

 

[Juhani Manninen]

I found an article that addresses the same issue. How has the heat of adjacent cables been made to affect each other? I tried creating a simple model, but the mutual heat influence between the cables doesn’t seem to transfer. In my opinion, the adjacent surfaces of the cables should be slightly warmer than the outer surface. In the model in the article, gravity also seems to play a role because the lower surface of the cables is the coolest point, due to increased air circulation.

Here is the article:
https://www.mdpi.com/1996-1073/14/7/2008

 

Here is my model:

[Ashish Khemka]

Hi,

In steady state thermal simulation there should not be any effect of gravity. Also, we do not model fluid in such simulation. You can define convection boundary condition if needed.

In the paper I thnk the model is solved in Maxwell and then the results are viewed in Mechanical.

Regards,

Ashish Khemka

[Juhani Manninen]

ICEPAK design includes a gravity option with a steady-state mode, and I believe this add airflow in a specific direction (natural convection). I think Maxwell itself can only generate ohmic losses, which can be coupled with Icepak or mechanical steady-state thermal analysis. What do you mean with that convection boundary condition?

[Ashish Khemka]

Hi,

I meant the convection that you have already defined:

Regards,

Ashish Khemka

[Juhani Manninen]

Ok, I probably need to create a topic over in the electronics section, in case someone there knows how the simulation in that article has been done.