[suoCFD]

Hi

I'm new to OpenFOAM. Before posting this thread, I reviewed almost all the tutorial cases in OpenFOAM, but I couldn't find one that suited my needs.

Let me explain my problem as best as I can: imagine a closed pipe with a certain thickness. There will be air inside and outside of the pipe, and there could also be various solid objects within the pipe, positioned such that they do not touch the pipe walls. Additionally, materials need to be assigned to all solids and fluids. The problem involves both conduction and convection heat transfer.

My question and request from you is this: what would be the correct way to mesh such a geometry? I couldn’t find an example that aligns with this type of geometry using snappyHexMesh.

Best regards, and thank you for your time.

[Yann]

Hello,

For multiregion meshes created with snappyHexMesh, you can check the following tutorials:

• OpenCFD branch (openfoam.com): snappyMultiRegionHeater
• Foundation branch (openfoam.org): heatedDuct

Be careful to check the tutorial corresponding to your branch/version of OpenFOAM, as they do not handle multi region meshing the same way.
Once you understand how meshing is handled in the tutorial, you should be able to adapt it to your own case.

Have fun!
Yann

[suoCFD]

Originally Posted by Yann

Hello,

For multiregion meshes created with snappyHexMesh, you can check the following tutorials:

• OpenCFD branch (openfoam.com): snappyMultiRegionHeater
• Foundation branch (openfoam.org): heatedDuct

Be careful to check the tutorial corresponding to your branch/version of OpenFOAM, as they do not handle multi region meshing the same way.
Once you understand how meshing is handled in the tutorial, you should be able to adapt it to your own case.

Have fun!
Yann

Hello Yann,

Thank you very much for your prompt response. I have reviewed these cases and many others like them.

From what I understand, what you mean is to thoroughly understand the details of mesh generation with snappyHexMesh. However, I don't have the time in this project to delve into those details, which might be why the snappyHexMesh files in these tutorial cases haven't been helpful to me.

Therefore, I need a snappyHexMesh setup that can mesh a geometry with an internal air region and additional solid geometries embedded within the innermost air region.

Best regards

[Yann]

Hello Suhan,

Originally Posted by suoCFD

From what I understand, what you mean is to thoroughly understand the details of mesh generation with snappyHexMesh.

Yes, this is indeed the usual way to learn about how to setup a case or learn to use some features in OpenFOAM.

Originally Posted by suoCFD

Therefore, I need a snappyHexMesh setup that can mesh a geometry with an internal air region and additional solid geometries embedded within the innermost air region.

There is no such thing as a generic snappyHexMeshDict file. Each case requires its own snappyHexMeshDict file tailored to the geometry you want to mesh. So unless there is someone who meshed the exact same problem than your, it is pretty unlikely to get a ready-to-run file for your case. At some point you will have to get a basic understanding of snappyHexMesh to be able to adapt it to your needs.

Best regards,
Yann

[suoCFD]

Thank you so much for your responses. I am going to apply what you mentioned when the time comes.

[dlahaye]

Maybe

https://snappyhexmesh-gui.readthedoc...nappy_gui.html

?