Thermal analysis

A subforum specific to the development of the OpenFoam-based workbenches ( Cfd https://github.com/qingfengxia/Cfd and CfdOF https://github.com/jaheyns/CfdOF )

Moderator: oliveroxtoby

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easyw-fc
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Thermal analysis

Postby easyw-fc » Fri Feb 09, 2018 10:21 pm

oliveroxtoby wrote:
Fri Feb 09, 2018 9:15 am
As an introduction to the CfdOF workbench, we collect together a list of useful training material:
Hi Oliver,
thank you for your work and useful links :D

I was wondering if you have some tutorial on thermal analysis for pcbs...
something like this
https://www.simscale.com/projects/ahmed ... nalysis_1/

Some time ago I started a thread here
https://forum.freecadweb.org/viewtopic. ... 40#p133612
Image
and published something here
https://forum.kicad.info/t/kicad-stepup ... lysis/3828

but the video that @makkemal kindly published is not available anymore
https://forum.freecadweb.org/viewtopic. ... 10#p135611
(it was using old methods that have been supersede by the new FEM updates).

I think it would be a large interest for PCB thermal analysis with FreeCAD and FEM ...

Thanks a lot in advance
Maurice
HoWil
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Re: CfdOF Workbench Training Material

Postby HoWil » Mon Feb 12, 2018 12:31 pm

Hi Maurice,
Your above linked simulation is done with calculix. So, this is maybe the way to go. One would have to create a boundary condition for convective heart flux and a body load for body heat flux inside freecad.
The elmer solver should do it as well after implementing convection and this type of heartflux but you would have the benefit that you could solve the temperature separately from deformation, which is not possible in Fc -calculix now.
BR,
Howil
HoWil
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Re: CfdOF Workbench Training Material

Postby HoWil » Mon Feb 12, 2018 12:55 pm

See also.... https://www.simscale.com/docs/content/s ... ption.html
bernd wrote: ping
@Bernd: what do you think?
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bernd
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Re: CfdOF Workbench Training Material

Postby bernd » Mon Feb 12, 2018 6:49 pm

Sounds good to me. Would one of you give it a try?
HoWil
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Re: CfdOF Workbench Training Material

Postby HoWil » Mon Feb 12, 2018 7:04 pm

bernd wrote:
Mon Feb 12, 2018 6:49 pm
Sounds good to me. Would one of you give it a try?
I have the model and could simulate it if the body heart flux and the convection would be available.

@bernd: Should we split this thread and create a new one?
BR
Howil
EDIT: Here is some additional info for the 'benchmark' model : https://www.simscale.com/projects/ahmed ... nalysis_1/
And the geometry is attached in a first simple model.
Attachments
Termal analysis pcb ccx.fcstd
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Last edited by HoWil on Mon Feb 12, 2018 8:42 pm, edited 1 time in total.
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easyw-fc
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Re: CfdOF Workbench Training Material

Postby easyw-fc » Mon Feb 12, 2018 8:24 pm

HoWil wrote:
Mon Feb 12, 2018 7:04 pm
bernd wrote:
Mon Feb 12, 2018 6:49 pm
Sounds good to me. Would one of you give it a try?
I have the model and could simulate it if the body heart flux and the convection would be available.

@bernd: Should we split this thread and create a new one?
BR
Howil
Hi @Howil and @bernd
thank you a lot for your help...
If you want we could create a new post like:
'FEM Thermal Analysis of a PCB'

If you need a different model, please let me know.
Maurice