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[Technical] overset meshing in openfoam (hard) |
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August 5, 2021, 05:24 |
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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August 5, 2021, 05:41 |
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#2 |
New Member
Join Date: Nov 2020
Posts: 15
Rep Power: 5 |
5 pics following below
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August 5, 2021, 11:47 |
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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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August 8, 2021, 08:57 |
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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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August 8, 2021, 09:55 |
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#5 |
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Join Date: Nov 2020
Posts: 15
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Hi Fouch,pic6&7 are meshes that diverged,pic8 runs fine. |
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August 8, 2021, 16:45 |
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#6 |
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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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August 9, 2021, 03:25 |
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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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May 18, 2024, 03:00 |
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#8 |
New Member
shristi
Join Date: Jun 2023
Posts: 26
Rep Power: 3 |
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overset, overset mesh |
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