View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0002274 | OpenFOAM | Bug | public | 2016-09-28 15:45 | 2022-05-18 11:15 |
| Reporter | Shorty | Assigned To | will | ||
| Priority | normal | Severity | minor | Reproducibility | always |
| Status | resolved | Resolution | fixed | ||
| Platform | GNU/Linux | OS | Ubuntu | OS Version | 16.04 |
| Fixed in Version | dev | ||||
| Summary | 0002274: ACMI Boundary does not let particle go through (act like a wall) | ||||
| Description | Dear all, the usage of the ACMI boundary condition in conjunction with particle flows is not working as expected. The ACMI boundary acts on the particles as a wall. The case attached is a simple modification of the oscillatingInlet tutorial with two particles. One of them should pass from one domain through the ACMI to the second one that is not possible at the moment. | ||||
| Steps To Reproduce | Execute the run script... | ||||
| Additional Information | I also tried the case without flow, while the gravity was the accelerating force for the particle. Although in this case, the particle just were kept by the ACMI wall. | ||||
| Tags | ACMI, cyclicACMI, icoUncoupledKineticParcelDyMFoam, parcels | ||||
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This feels like it's identical to the issue #1836: http://bugs.openfoam.org/view.php?id=1836 If it is, then it's already fixed in the OpenFOAM-dev development line. Therefore, please try with OpenFOAM-dev before anyone else tries to debug this case. |
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I checked the case with the latest OpenFOAM-dev version and the problem still exist. I also checked it with the AMI boundary condition. Here it is working. For the ACMI (attached) not. If you need the AMI case (that is working), let me know. |
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You've got your patch interaction rebounding all particles if they hit the ACMI blockage patch. They might never hit the ACMI cyclic patch so never trigger the special handling for ACMI/AMI. What happens if you let the particles ignore the blockage patches? |
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Hi Mattijs, I already tried it (i forgot to mention it). If I unset the interaction model - the parcel will stick to the wall and nothing more will happen. If I remove the [b]uncoupled[/b] ACMI patches from the interaction patches, I get the error that I have to specify all patches: - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Selecting distribution model fixedValue Selecting dispersion model none Selecting patch interaction model localInteraction --> FOAM FATAL ERROR: All patches must be specified when employing local patch interaction. Please specify data for patches: 2 ( ACMI1_blockage ACMI2_blockage ) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
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Ok, the problem is that there are two faces on top of each other (blockage patch and cyclicACMI). If the particle would hit the cyclicACMI it would do the right thing, but if it hits the blockage it just regards it as a normal patch/wall. Since the two faces are on exactly the same location (since using the same points) it is probably the order of both faces in the cell next to it that determines which of these gets hit first. What needs to happen is for the blockage patch to 'know' that another patch determines the patch interaction. |
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This issue should be resolved by the new Non-Conformal Coupled (NCC) development. NCC does not use duplicate poly faces, so the issue in question will not occur. We have test cases (incompressible/pimpleFoam/RAS/ballValve) in which particles (streamlines) successfully cross partially overlapped couplings. https://github.com/OpenFOAM/OpenFOAM-dev/commit/569fa31d09f98e29d1aaf84d40bb16043f104ec6 |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2016-09-28 15:45 | Shorty | New Issue | |
| 2016-09-28 15:45 | Shorty | File Added: oscillatingInletACMI2D_particle.tar.gz | |
| 2016-09-28 15:45 | Shorty | Tag Attached: ACMI | |
| 2016-09-28 15:45 | Shorty | Tag Attached: cyclicACMI | |
| 2016-09-28 15:45 | Shorty | Tag Attached: icoUncoupledKineticParcelDyMFoam | |
| 2016-09-28 15:45 | Shorty | Tag Attached: parcels | |
| 2016-09-28 16:39 | wyldckat | Note Added: 0006931 | |
| 2016-09-28 18:44 | Shorty | Note Added: 0006932 | |
| 2016-09-30 12:24 | MattijsJ | Note Added: 0006945 | |
| 2016-09-30 13:34 | Shorty | Note Added: 0006946 | |
| 2016-10-07 09:40 | MattijsJ | Note Added: 0006977 | |
| 2022-05-18 11:15 | will | Assigned To | => will |
| 2022-05-18 11:15 | will | Status | new => resolved |
| 2022-05-18 11:15 | will | Resolution | open => fixed |
| 2022-05-18 11:15 | will | Fixed in Version | => dev |
| 2022-05-18 11:15 | will | Note Added: 0012594 |
