Conjugate Heat Transfer Question

Project Support
1

Hello All,
I am attempting to run a basic conjugate heat transfer simulation and am running into an issue. In my model I would like to heat a sample located at the center. I am currently using a Wall to accomplish this, but I cannot run the simulation do to the following error:

“Please ensure that each face only has a single boundary condition or interface assignment. Multiple boundary condition or interface assignments for the following entities: face23@Sample, face1@Sample”

I do not have any other walls touching this sample, only other solids that I want to see how they dissipate heat.

From my understanding, I cannot have a fully enclosed Wall. I am unsure how I can run this simulation, while setting my desired parameters. Is there a better way to set a core temp in a CHT Simulation? How should I be setting my heat source? Any help would be very much appreciated.
Thanks,
Oscar

2

Hi @OscarV2, thanks for posting

Since I don’t have a link to your project in particular, I’m not sure the exact context behind the error. However, I would assume you have two solids touching each other (for instance, a solid part and the flow region) and are trying to have the wall boundary condition assigned to the interface. As the error message states, however, this is indeed not possible in SimScale.

A workaround I’ve seen working in the past is to create a small cavity inside the solid and apply the temperature there. Since the thickness will be too small for a gradient, the outer face should conserve the temperature.

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Another alternative is to go for a power source instead - in this case no CAD changes are necessary.

Cheers
Igor