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mixerTankAMI3D_forBugReport.tar.gz (11,163 bytes) |
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Volume evolution.PNG (101,189 bytes)
weightedSum(phi) difference between AMI1 and AMI2.PNG (613,946 bytes) |
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AMI1.dat (177,600 bytes) AMI2.dat (183,932 bytes) volFieldValue.dat (35,141 bytes) |
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Yes this is a well known problem with the current AMI implementation and has been reported several times. If you search for AMI you will see the previous discussions on this issue. |
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Sure. I have reviewed the most of related items from this tracking system and CFD-online forum. I saw there were still a lot of struggles to try to solve this issue, although it had a long history. And I found the pimpleDyMFoam with AMI and VoF family solvers with MRF have already had some improvements to keep the mass/volume conversion, but the issue on VoF solvers with AMI is still there about several years and across the several versions. In addition, it seems to even turn worse and worse, the following figure gives a comparison between two old snapshots of dev-490a29719073e724 by released on Sep. 06, 2018 and dev-fa9cccf11df67a1f on Jun. 11, 2020. Maybe, it is a hint what you have changed, thus it turn worse. By the way, could you of OF.org have any plan to fix this ill in the near future, or if possible, could you give some hints or clues on how to fix it? Finally, thank you very much.
mass_loss_comparison_across_different_OFversion.PNG (207,547 bytes) |
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This is a particularly tricky problem to solve and requires funding for development and maintenance: https://openfoam.org/news/funding-2020/ |
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Thank you for all the replies. Honestly, this bug has resulted in many abnormal results when the VoF solvers with AMI were employed and thus incurred the OF creditworthiness loss. Of course, I can understand your demand for funding to struggling OF. If possible, in the future once I get a financial aid, I will attend the Maintenance Plans. On this bug, I have spent several days to find a workaround to forcefully keep mass balance when using AMI interpolation, I still need some additional tests to guarantee the validity of this remedy. Whatever, thank you very much for sharing the excellent OF codes with the community. |
- Anonymous
