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[Technical] overset meshing in openfoam (hard) |
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#1 |
New Member
Join Date: Nov 2020
Posts: 15
Rep Power: 5 ![]() |
Hi,foamers!
I am using overPimpleDyMFoam to simulate valve shut and I found a pretty hard problem. First I replaced cylinder case's mid cylinder with my own blockmesh,the result appeared the same with original case. pic1 And I made it bigger to the up and down wall it's still runs smoothly, pic2 But when I change the background mesh to a lean one pic3 the speed gets extremly huge and blow up pic4 And I shrink the mid cylinder it's goes well. pic5 So maybe there is a problem deep in the xxxxxx.C or xxxxxxx.H or just myself missetting something in the case? |
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#2 |
New Member
Join Date: Nov 2020
Posts: 15
Rep Power: 5 ![]() |
5 pics following below
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#3 |
New Member
Join Date: Nov 2020
Posts: 15
Rep Power: 5 ![]() |
Any answer would be appreciated
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#4 |
Member
Join Date: Feb 2020
Posts: 79
Rep Power: 6 ![]() |
Hi,
That would be useful of you can share a picture of your mesh. |
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#5 |
New Member
Join Date: Nov 2020
Posts: 15
Rep Power: 5 ![]() |
Hi Fouch,pic6&7 are meshes that diverged,pic8 runs fine. |
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#6 |
Member
Join Date: Feb 2020
Posts: 79
Rep Power: 6 ![]() |
Something is not clear to me. If I well understood, you simulate a flow around a hole. So why do you have cells inside the hole ?
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#7 |
New Member
Join Date: Nov 2020
Posts: 15
Rep Power: 5 ![]() |
Hi Fouch,after mergeMesh it's act just like this.You can run case overPimpleDyMFoam for more information.
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#8 |
New Member
shristi
Join Date: Jun 2023
Posts: 24
Rep Power: 3 ![]() |
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Tags |
overset, overset mesh |
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