I am trying to create a Convective Heat Transfer Model and having trouble running the simulation. There seems to be several error when testing the simulation run. Here is my model: https://www.simscale.com/workbench/?pid=7008745691320633198&mi=spec%3A50db777e-0ecb-44b7-90b9-049ad6822790%2Cservice%…

Hello, The rule number 1 is: under normal circumstances, a single volume is allowed for the simulation. Failing to satisfy this requirement will result in a multi-region error. From the tutorial that I linked: [image] For your geometry, the hut is currently 100% closed and there are no openings.…

Hey there, and thanks for using our forum! For a Convective Heat Transfer simulation, you need to use only the fluid volume as a part. Currently, you are trying to simulate using your solid boundary parts. This is easily fixed by performing a flow volume extraction, as explained in the following a…

Am I trying to simulate an External or Internal Flow Volume? I am also confused by your wording “you need to use only the fluid volume as a part” and “you are trying to simulate using your solid boundary parts.” Could you explain that a bit further?

Hello, The idea is to do exactly what you did for the incompressible analysis (from this thread ): the only solid volume that should be in your CAD model is the flow region: [image] The solid walls of the huts are not necessary and should be deleted. Cheers

I understand that, but this time I have a modeled person in my hut and I want to test the internal heat dissipation from them and how it ventilates out of the hut. From the tutorial I am watching, there are multiple solids that are used to set different properties to. If I do what I did last time,…

I’d recommend that you check this tutorial for the usual approach (again, this tutorial uses a single volume, which is the correct approach to model people): Thermal Comfort In a Meeting Room | Tutorial | SimScale Sections 2 to 2.3 are of particular interest.

I followed the tutorial as best as I could, but the simulation ended up not working. I have a feeling I set up my external flow region incorrectly. What do you think? [image]

I ran the tutorial simulation and it helped a lot. What I still do not understand is that while there is only one solid (which is the flow region), but there are still other entities in the model that you can select and change their attributes. They are placed under the topological entity sets. H…

Hello, Those entities were actually manually created. They are very helpful for face selection - but as you mentioned, we still have a single volume (which is the requirement to run this kind of analysis). In case you are interested in how to create topological entity sets, please check this docum…

Oh that makes sense! I will try this out. Thanks

Is this normal amount of time for a simulation to run? [image]

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Trying to create a Convective Heat Transfer Model

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krazycyle June 9, 2021, 7:48pm 21

Ok thank you!