Learning Forum

[hhayati]

Hi,

I am trying to simulate a capsule with 10 filters in it. the length of the capsule is 1m and its diameter is 2 cm, so if I use unstructured mesh, the number of elements would be more than 400million. Therefore, for being able to use structured mesh, I blocked the whole model with SpaceClaim. But, I am confused about the Shared Topology! I have attached the cross-section of the capsule and the mesh.

[hhayati]

I could fixed the Non-Positive Volume Cells and Interface Zones Overlap errors by improving the mesh, but I still have another issue! when I open Fluent, it generated shadow walls for each interface, which is fine. but it generates 4 walls, which seem not shadow, they seem like real walls! bellow is the figure :

and in the next figure you see it in CFD-POST:

Would you guide me on that?

[hhayati]

I could fix this issue too. I explain it here in case anyone faces this issue in future.
There was a tiny gap between the blocks, and that gap generated those walls. I went back to Spaceclaim and fixed the gap and remeshed the model and the problem got fixed.
Another issue was because of the connections. Instead of selecting a face as the interface between two domains, it turned out that an edge was selected by mistake! and this caused the issue.

Hope this post is hopeful for others.

[Keyur Kanade]

Good that issue is resolved.