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August 8, 2018, 10:23 |
OverPimpleDyMFoam issue
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#1 |
New Member
Harish K G
Join Date: Aug 2018
Posts: 7
Rep Power: 8 |
Hi, Am new to openfoam. While i run my simulation using overset method in openfoam(OverpimpleDyMFoam) i get following error:
FOAM Warning : From function bool Foam:versetPolyPatch::master() const in file oversetPolyPatch/oversetPolyPatch.C at line 149 The master overset patch is not the first patch. Generally the first patch should be an overset patch to guarantee consistent operation. --> FOAM Warning : From function bool Foam:versetPolyPatch::master() const in file oversetPolyPatch/oversetPolyPatch.C at line 149 The master overset patch is not the first patch. Generally the first patch should be an overset patch to guarantee consistent operation. --> FOAM Warning : From function bool Foam:versetPolyPatch::master() const in file oversetPolyPatch/oversetPolyPatch.C at line 149 The master overset patch is not the first patch. Generally the first patch should be an overset patch to guarantee consistent operation. Please help me sort this issue. Thanks |
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August 8, 2018, 10:35 |
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#2 |
New Member
Osman Mirza Demircan
Join Date: May 2017
Location: Ankara, Türkiye
Posts: 29
Rep Power: 9 |
This a warning and not an error. I get get the same warning for my runs, however, it doesn't have a visible effect on the results.
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Osman Mirza Demircan |
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August 9, 2018, 02:54 |
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#3 |
New Member
Harish K G
Join Date: Aug 2018
Posts: 7
Rep Power: 8 |
hi osman.. For me the visible result has some issues..i am using a three blade system with overlapping zone..overset mesh method is what i am prefering.
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August 9, 2018, 02:56 |
Simulation image from paraview
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#4 |
New Member
Harish K G
Join Date: Aug 2018
Posts: 7
Rep Power: 8 |
Simulation image from paraview
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August 9, 2018, 13:12 |
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#5 |
New Member
Osman Mirza Demircan
Join Date: May 2017
Location: Ankara, Türkiye
Posts: 29
Rep Power: 9 |
Unfortunately, it is hard to understand what is the issue with your case, with only these images. But it seems to me that your mesh gets much coarser to the edges of your domains surrounding the blades.
Whenever a problem happens with an overset implementation, it is important to check if the overlapping region is compatible with the background mesh as it moves. You should make sure that the background is not very coarse compared to the overlapping region. Ultimately, it could be a problem related to your mesh quality. Other than that, check your boundary conditions and overset region definitions.
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Osman Mirza Demircan |
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August 10, 2018, 00:23 |
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#6 |
New Member
Harish K G
Join Date: Aug 2018
Posts: 7
Rep Power: 8 |
I use fluentMeshToFoam and meshing is done in ansys workbenck..the mesh used is tetrahedron.
Thanks for the reply ..would try to make the mesh fine and implement it once more |
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