ABAQUS: How to define adiabatic interfaces in a heat transfer simulation

[CADlalala]

Hello,

I want to perform a heat transfer calculation of a simple model. Basically I have one Part which contains two concentric disks where the outer disk is split into "chunks" (see picture below, also attached). I have a surface heat flux load applied in the inner face of the inner ring and I apply convection to the outer faces of the outer ring (different heat transfer coefficients). My problem is how to make the interfaces between the "chunks" adiabatic.

Any ideas?

Many thanks!

 

[corus]

Adiabatic means there is no heat flow so no boundary conditions are applied. You can check that the results are correct as the contours of temperature will be perpendicular to that surface.

 

[csk62]

Correct. In short, do absolutely nothing.

 

[CADlalala]

Thanks for your answer. I have checked and there is no heat flow passing from one chunk to another. However I would like to "stop" the heat conduction at the interface as well and this is not happening if I just "do nothing" as you can see from the picture. How could I achieve this? Please note that I have one single part, not many of them (ring and chunks) assembled together.

[URL unfurl="true"]https://res.cloudinary.com/engineering-com/image/upload/v1444737003/tips/conductivityIssue_vvzevg.tiff[/url]

 

[corus]

There will be heat flow by conduction, and if there is a gap, then by radiation. Make sure you're modelling the real world. If you don't want to do this then just have separate parts and let the red parts just do nothing. The temperature won't change though from it's initial value and the parts will in effect be redundant.

 

[CADlalala]

So, there is no way to "stop" the conduction effect at the interface keeping all as it is? They reason why I want to do it this way is because I want to study what happens in the whole model if I change the conductivity of one of the chunks.

 

[csk62]

You could define the gap conduction such that "no" conduction occurs between the two interfaces.
This can be achieved by specifying a very small conduction coefficient.