Hi,
I am trying to simulate the heat transfer and distribution of a thin (1µm) heated membrane connected to a bulk material acting as a heat sink in different atmospheres.
Doing a heat transfer simulation works, but the CHT simulation is greyed out when i want to select it. And if I create a CHT simulation I can’t select my geometry.
What could be the cause for that? Do I have to change my model somehow?
Thanky in advance.
Best wishes,
Elmar
Hi Elmar,
You have to take into account some things:
Does that apply in your case?
Best,
Jousef
Hi Jousef,
thank you for your answer.
The model consists of several solid parts, but it is indeed a STL file.
I have already tried several of the other supported file formats, but the thin membrane (1 µm, in comparison the base area of the model is 1 mm) will, after uploading, consist of only sheet bodies, that can’t be converted back to a solid body. I think 1µm is to thin for either saving or loading properly in that formats. Any help is appreciated.
Here is a comparison of the membrane between a step file (exported from freecad) importet into solidworks and uploaded to simscale:
Solidworks:
Simscale:
The problem is clearly visible.
Best regards,
Elmar
Hi Elmar!
I will forward this to my CAD team, maybe they can comment on that issue!
Thanks for the information!
Jousef
Hi Alex,
thank you for your answer.
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I can export or save my model to several different file formats, that is no problem. STL was just one I had already heard of and it had already worked for a heat transfer simulation :).
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I am not exactly sure what I have to do to use a thin layer resistance model for the membrane. Or how to model it in my CAD programm. I am quite new in both, simulation and modelling. The membrane then would be a layer without actual thickness? As long as it is still possible to simulate heating on a part of the membrane, heat transfer and distribution of the temperature with the surrounding atmosphere and material connections it should be ok.
And maybe I can change my model, replace the bulk material with a constant temperature boundary condition and scale it up a bit. I have to think about that and try it.
Best regards,
Elmar