View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0001430 | OpenFOAM | Bug | public | 2014-10-29 13:57 | 2014-12-15 22:42 |
| Reporter | Assigned To | henry | |||
| Priority | normal | Severity | minor | Reproducibility | always |
| Status | closed | Resolution | no change required | ||
| Platform | Unix | OS | Other | OS Version | (please specify) |
| Summary | 0001430: zeroGradient condition on velocity makes buoyantBoussinesqPimpleFoam missbehave | ||||
| Description | Imposing a zeroGradient condition to the velocity in the example hotRoom, makes the temperature (T) increasing indefinitely in one corner of the mesh. It seems to happen only to one node of the domain. The temperature and velocity BC should be independent, I don't see any mathematical explanation but a bug in the code. | ||||
| Steps To Reproduce | in the hotRoom example, change in the file 0/U: ceiling { // type fixedValue; // value uniform (0 0 0); type zeroGradient; } run the example (maybe export results more often to see what is going on) | ||||
| Tags | No tags attached. | ||||
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1. Why change BC only for velocity? I.e. if you modify just velocity, you create inconsistency in BCs. 2. Settings of the tutorial case are in fact taken from steady state case, so you need to modify then for transient case. 3. I've attached modified case files, with them it runs till ~23 seconds after that turbulence starts to develop (due to zeroGradient at the ceiling) and I don't think the case mesh is appropriate for the turbulent flow. |
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zeroGradient for U at a wall is incorrect. |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2014-10-29 13:57 |
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New Issue | |
| 2014-11-14 15:16 | alexeym | File Added: hotRoom.tar.gz | |
| 2014-11-14 15:20 | alexeym | Note Added: 0003289 | |
| 2014-12-15 22:42 | henry | Note Added: 0003319 | |
| 2014-12-15 22:42 | henry | Status | new => closed |
| 2014-12-15 22:42 | henry | Assigned To | => henry |
| 2014-12-15 22:42 | henry | Resolution | open => no change required |
