View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0003506 | OpenFOAM | Bug | public | 2020-06-04 17:42 | 2020-06-06 17:53 |
| Reporter | CharllieMarshalll | Assigned To | henry | ||
| Priority | normal | Severity | crash | Reproducibility | always |
| Status | closed | Resolution | no change required | ||
| Platform | Unix | OS | Other | OS Version | (please specify) |
| Summary | 0003506: [chtMultiRegionFoam] Unphysical temperature drop at the start | ||||
| Description | System: Ubuntu 18.04 Solver chtMultiRegionFoam My case is to push incompressible fluid through a small gap. But the temperature drops strangely. Mesh refinement already tried, it seems only get worse. I have tried to double the cell number of this case, T just go negative and then diverge. Possibly related previous reports: https://www.cfd-online.com/Forums/openfoam-solving/207386-impeller-temperature-decreasing-should-increasing.html#post773398 https://bugs.openfoam.org/view.php?id=1339 | ||||
| Steps To Reproduce | ./Allrun wait for just a few output steps then check the temperature field, the temperature at the inlet side can drop from 300K to 70K. The physic should not allow such temperature jump. T is supposed to increase due to the viscous heating. | ||||
| Tags | No tags attached. | ||||
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Also, noticed that large pressure oscillation is observed on the inlet side (left side) of the domain. |
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Sorry, please just pause this issue here for a moment. It seems I made a rookie mistake. |
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User error |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2020-06-04 17:42 | CharllieMarshalll | New Issue | |
| 2020-06-04 17:42 | CharllieMarshalll | File Added: FBS_bug_T_drop 2.zip | |
| 2020-06-04 20:41 | CharllieMarshalll | Note Added: 0011376 | |
| 2020-06-05 21:14 | CharllieMarshalll | Note Added: 0011379 | |
| 2020-06-06 17:53 | henry | Assigned To | => henry |
| 2020-06-06 17:53 | henry | Status | new => closed |
| 2020-06-06 17:53 | henry | Resolution | open => no change required |
| 2020-06-06 17:53 | henry | Note Added: 0011380 |
