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March 31, 2016, 14:37 |
multi patch boundary condition
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#1 |
New Member
ZHENKAI ZHAO
Join Date: Oct 2015
Posts: 14
Rep Power: 10 |
Hi, guys,
I am try to simulate a multi-body case using pimpleDyMFoam. I have got three moving patches so I have set their U BCs as movingWallVelocity. I use external programme to calculate their position and add the new position on to the patch using methods below: pointDisplacement_.boundaryField()[patchID2] == pointsN2 - pointsI2; the "patchID2" is the patch name. However, when i run it, the simulation blows up quickly, and I have tested the case with only one moving patch and it worked fine. I have also used other BCs for the moving patches like zeroGradient which is not correct, and there is no blow up on the fly. I wonder if there is a limitation on using movingWallVelocity BC or the problem is related to the mesh.update(). it may be unclear about my statements. If you need more information, please tell me. ZHENKAI |
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April 5, 2016, 10:45 |
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#2 |
New Member
ZHENKAI ZHAO
Join Date: Oct 2015
Posts: 14
Rep Power: 10 |
Hi, guys,
I am try to simulate a multi-body case using pimpleDyMFoam. I have got three moving patches so I have set their U BCs as movingWallVelocity. I use external programme to calculate their position and add the new position on to the patch using methods below: pointDisplacement_.boundaryField()[patchID2] == pointsN2 - pointsI2; the "patchID2" is the patch name. However, when i run it, the simulation blows up quickly, and I have tested the case with only one moving patch and it worked fine. I have also used other BCs for the moving patches like zeroGradient which is not correct, and there is no blow up on the fly. I wonder if there is a limitation on using movingWallVelocity BC or the problem is related to the mesh.update(). it may be unclear about my statements. If you need more information, please tell me. ZHENKAI |
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