View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0002652 | OpenFOAM | Feature | public | 2017-08-05 20:00 | 2017-10-27 17:07 |
| Reporter | petebachant | Assigned To | henry | ||
| Priority | normal | Severity | minor | Reproducibility | have not tried |
| Status | closed | Resolution | suspended | ||
| Product Version | dev | ||||
| Summary | 0002652: Feature idea: Function object to calculate boundary layer thickness | ||||
| Description | It would be interesting to be able to see the distribution of boundary layer thickness over patches. Potential input specification BLThickness { type boundaryLayerThickness; U U; magUInf 1.0; velocityFraction 0.99; // use delta_99 criteria patches (); // use all walls by default? } Is there an existing function object that does something similar, which could be easily adapted? | ||||
| Tags | No tags attached. | ||||
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Can you contribute such a functionObject? |
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Sure, I can work on it. Any tips on a good functionObject to start with, or a snippet of existing code that interrogates a quantity marching normal to a face? |
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@petebachant: If the layer is only as thick as the cells near the wall: https://github.com/OpenFOAM/OpenFOAM-5.x/tree/master/src/functionObjects/field/yPlus - Then take a look at how 'yPlus' is calculated on the turbulence models. If the layer is larger than the cells, I know that 'boundaryFoam' works for a single column of cells: https://github.com/OpenFOAM/OpenFOAM-5.x/tree/master/applications/solvers/incompressible/boundaryFoam For a general approach... I don't remember anything that already does this, but the following come to mind: - The kOmega, DES and IDDES turbulence models come to mind: https://github.com/OpenFOAM/OpenFOAM-5.x/tree/master/src/TurbulenceModels/turbulenceModels/LES - The utility 'applyBoundaryLayer': https://github.com/OpenFOAM/OpenFOAM-5.x/tree/master/applications/utilities/preProcessing/applyBoundaryLayer - You should find a few adaptations of his utility on the CFD-Online forums. - Anything that uses 'wall distance', e.g. see the report #968: https://bugs.openfoam.org/view.php?id=968 |
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Thanks for the tips Bruno! |
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Please re-open when the contribution is ready. |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2017-08-05 20:00 | petebachant | New Issue | |
| 2017-08-05 20:30 | henry | Note Added: 0008519 | |
| 2017-08-05 22:21 | petebachant | Note Added: 0008520 | |
| 2017-08-05 22:34 | wyldckat | Note Added: 0008521 | |
| 2017-08-05 23:24 | petebachant | Note Added: 0008522 | |
| 2017-10-27 17:07 | henry | Assigned To | => henry |
| 2017-10-27 17:07 | henry | Status | new => closed |
| 2017-10-27 17:07 | henry | Resolution | open => suspended |
| 2017-10-27 17:07 | henry | Note Added: 0008948 |
