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[snappyHexMesh] SnappyHexMesh/splitMeshRegion : region1 in zone "-1" |
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September 6, 2019, 11:48 |
SnappyHexMesh/splitMeshRegion : region1 in zone "-1" anormally generated
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#1 |
New Member
guimagyar
Join Date: Aug 2019
Posts: 2
Rep Power: 0 |
Dear Foamers,
I'm kind of newbie on OpenFOAM and I got this incomprehensible problem which with i'm dealing with. I have 4 stl files. One of this stl file is AirAmbiant (the air) and is surrounding all the other 3 stl files. AirAmbiant is just a big hex which size is (50 470 160). The problem is that i get this "region1" in zone "-1" (cf. the splitMeshRegions Log below) which is automatically created and i do not understand why ... because my blockmesh is exactly the size of my "AirAmbiant" stl file, so normally there should be no available space for the meshing to create this "region1" ? I have tried several different meshing configuration but none has made this "region1" not to be generated... Have you encountered this kind of issue or do you have any idea why it could occur ? I have attached a screenshot of the generated "region 1" (in blue) which border is just inside blockmesh cells ... weird ? Thank you very much for your help. My blockmesh file, snappy file and splitMeshRegions log are below. Code:
/*--------------------------------*- C++ -*----------------------------------*\ ========= | \\ / F ield | OpenFOAM: The Open Source CFD Toolbox \\ / O peration | Website: https://openfoam.org \\ / A nd | Version: 6 \\/ M anipulation | \*---------------------------------------------------------------------------*/ FoamFile { version 2.0; format ascii; class dictionary; object blockMeshDict; } // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // convertToMeters 0.001; zmax 50; //zmin -15; ymax 470; //ymin -135; xmax 160; //xmin -80; vertices ( //parallèlipède de base pour le snappyMesh (0 0 0) ($xmax 0 0) ($xmax $ymax 0) (0 $ymax 0) (0 0 $zmax) ($xmax 0 $zmax) ($xmax $ymax $zmax) (0 $ymax $zmax) ); blocks ( hex (0 1 2 3 4 5 6 7) (16 47 5) simpleGrading (1 5 3) ); edges ( ); boundary ( // Wall car pas d'échange avec l'extérieur (T°C imposée ou h infini) minZ { type wall; faces ( (1 0 3 2) ); } maxZ { type wall; faces ((4 5 6 7)); } minX { type wall; faces ((0 3 7 4)); } maxX { type wall; faces ((1 2 6 5)); } minY { type patch; faces ((0 1 5 4)); } maxY { type patch; faces ((3 2 6 7)); } ); mergePatchPairs ( ); // ************************************************************************* // Code:
/*--------------------------------*- C++ -*----------------------------------*\ ========= | \\ / F ield | OpenFOAM: The Open Source CFD Toolbox \\ / O peration | Website: https://openfoam.org \\ / A nd | Version: 6 \\/ M anipulation | \*---------------------------------------------------------------------------*/ FoamFile { version 2.0; format ascii; class dictionary; object snappyHexMeshDict; } // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // // Which of the steps to run castellatedMesh true; snap true; addLayers true; geometry { AirAmbiant { type triSurfaceMesh; file "AirAmbiant.stl"; } TriacPlastique { type triSurfaceMesh; file "TriacPlastique.stl"; } TriacAlu { type triSurfaceMesh; file "TriacAlu.stl"; } Dissipateur { type triSurfaceMesh; file "Dissipateur.stl"; } }; // Settings for the castellatedMesh generation. castellatedMeshControls { maxLocalCells 1000000; maxGlobalCells 2500000; minRefinementCells 0; nCellsBetweenLevels 1; //maxLoadUnbalance 0.00; features ( { file "AirAmbiant.eMesh"; level 2; } { file "TriacAlu.eMesh"; level 2; } { file "TriacPlastique.eMesh"; level 2; } { file "Dissipateur.eMesh"; level 3; } ); // Surface based refinement refinementSurfaces { AirAmbiant { // Surface-wise min and max refinement level level (1 1); faceZone AirAmbiant; //pour marquer d'un flag les faces et cells à l'intérieur cellZone AirAmbiant; //cellZoneInside inside; } TriacPlastique { // Surface-wise min and max refinement level level (3 3); faceZone TriacPlastique; cellZone TriacPlastique; //cellZoneInside inside; } TriacAlu { // Surface-wise min and max refinement level level (3 3); faceZone TriacAlu; cellZone TriacAlu; //cellZoneInside inside; } Dissipateur { // Surface-wise min and max refinement level level (3 3); faceZone Dissipateur; cellZone Dissipateur; //cellZoneInside inside; } } // Resolve sharp angles resolveFeatureAngle 30; refinementRegions { // refinementBox //{ // mode inside; // levels ((1E15 4)); //} } // Mesh selection locationInMesh (0 0 0); allowFreeStandingZoneFaces false; } // Settings for the snapping. snapControls { nSmoothPatch 5; tolerance 1.0; nSolveIter 100; nRelaxIter 10; nFeatureSnapIter 5; } // Settings for the layer addition. addLayersControls { relativeSizes true; layers { Dissipateur_to_AirAmbiant { nSurfaceLayers 4; } } // Per final patch (so not geometry!) the layer information expansionRatio 1.2; finalLayerThickness 0.025; minThickness 0.005; nGrow 0; // Advanced settings featureAngle 30; nRelaxIter 3; nSmoothSurfaceNormals 2; nSmoothNormals 4; nSmoothThickness 2; maxFaceThicknessRatio 0.2; maxThicknessToMedialRatio 0.5; minMedianAxisAngle 90; nBufferCellsNoExtrude 0; nLayerIter 50; } meshQualityControls { #include "meshQualityDict" } mergeTolerance 1e-6; // ************************************************************************* // Code:
-------------------------------------------------------------------------- [[38488,1],1]: A high-performance Open MPI point-to-point messaging module was unable to find any relevant network interfaces: Module: OpenFabrics (openib) Host: FRRO741 Another transport will be used instead, although this may result in lower performance. NOTE: You can disable this warning by setting the MCA parameter btl_base_warn_component_unused to 0. -------------------------------------------------------------------------- /*---------------------------------------------------------------------------*\ ========= | \\ / F ield | OpenFOAM: The Open Source CFD Toolbox \\ / O peration | Website: https://openfoam.org \\ / A nd | Version: 6 \\/ M anipulation | \*---------------------------------------------------------------------------*/ Build : 6-47517f2ebb1b Exec : splitMeshRegions -parallel -cellZones -overwrite Date : Sep 06 2019 Time : 16:58:03 Host : "FRRO741" PID : 29028 I/O : uncollated Case : /home/utilisateur/OpenFOAM/OpenFOAM-6/run/PPLDEC0195Bd nProcs : 6 Slaves : 5 ( "FRRO741.29029" "FRRO741.29030" "FRRO741.29031" "FRRO741.29032" "FRRO741.29033" ) Pstream initialized with: floatTransfer : 0 nProcsSimpleSum : 0 commsType : nonBlocking polling iterations : 0 sigFpe : Enabling floating point exception trapping (FOAM_SIGFPE). fileModificationChecking : Monitoring run-time modified files using timeStampMaster (fileModificationSkew 10) allowSystemOperations : Allowing user-supplied system call operations // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // Create time Create mesh for time = 0 Creating single patch per inter-region interface. Trying to match regions to existing cell zones. Number of regions:5 Writing region per cell file (for manual decomposition) to "/home/utilisateur/OpenFOAM/OpenFOAM-6/run/PPLDEC0195Bd/processor0/constant/cellToRegion" Writing region per cell as volScalarField to "/home/utilisateur/OpenFOAM/OpenFOAM-6/run/PPLDEC0195Bd/processor0/0/cellToRegion" Region Cells ------ ----- 0 607 1 41874 2 21286 3 128 4 352 Region Zone Name ------ ---- ---- 0 -1 region1 1 0 AirAmbiant 2 3 Dissipateur 3 2 TriacAlu 4 1 TriacPlastique Sizes of interfaces between regions: Interface Region Region Faces --------- ------ ------ ----- 0 3 4 88 1 0 1 443 2 2 3 137 3 1 2 18783 4 1 3 79 5 1 4 240 Reading volScalarField cellToRegion Adding patches Adding patches For interface between region TriacAlu and TriacPlastique added patches 6 TriacAlu_to_TriacPlastique 7 TriacPlastique_to_TriacAlu For interface between region region1 and AirAmbiant added patches 8 region1_to_AirAmbiant 9 AirAmbiant_to_region1 For interface between region Dissipateur and TriacAlu added patches 10 Dissipateur_to_TriacAlu 11 TriacAlu_to_Dissipateur For interface between region AirAmbiant and Dissipateur added patches 12 AirAmbiant_to_Dissipateur 13 Dissipateur_to_AirAmbiant For interface between region AirAmbiant and TriacAlu added patches 14 AirAmbiant_to_TriacAlu 15 TriacAlu_to_AirAmbiant For interface between region AirAmbiant and TriacPlastique added patches 16 AirAmbiant_to_TriacPlastique 17 TriacPlastique_to_AirAmbiant Region 0 -------- Creating mesh for region 0 region1 Testing:"/home/utilisateur/OpenFOAM/OpenFOAM-6/run/PPLDEC0195Bd/processor0/system/region1/fvSchemes" Writing dummy "region1/fvSchemes" Writing dummy "region1/fvSolution" Mapping fields Mapping field cellToRegion Deleting empty patches Writing new mesh Writing addressing to base mesh Writing map pointRegionAddressing from region0 points back to base mesh. Writing map faceRegionAddressing from region0 faces back to base mesh. Writing map cellRegionAddressing from region0 cells back to base mesh. Writing map boundaryRegionAddressing from region0 boundary back to base mesh. Region 1 -------- Creating mesh for region 1 AirAmbiant Testing:"/home/utilisateur/OpenFOAM/OpenFOAM-6/run/PPLDEC0195Bd/processor0/system/AirAmbiant/fvSchemes" Mapping fields Mapping field cellToRegion Deleting empty patches Writing new mesh Writing addressing to base mesh Writing map pointRegionAddressing from region1 points back to base mesh. Writing map faceRegionAddressing from region1 faces back to base mesh. Writing map cellRegionAddressing from region1 cells back to base mesh. Writing map boundaryRegionAddressing from region1 boundary back to base mesh. Region 2 -------- Creating mesh for region 2 Dissipateur Testing:"/home/utilisateur/OpenFOAM/OpenFOAM-6/run/PPLDEC0195Bd/processor0/system/Dissipateur/fvSchemes" Mapping fields Mapping field cellToRegion Deleting empty patches Writing new mesh Writing addressing to base mesh Writing map pointRegionAddressing from region2 points back to base mesh. Writing map faceRegionAddressing from region2 faces back to base mesh. Writing map cellRegionAddressing from region2 cells back to base mesh. Writing map boundaryRegionAddressing from region2 boundary back to base mesh. Region 3 -------- Creating mesh for region 3 TriacAlu Testing:"/home/utilisateur/OpenFOAM/OpenFOAM-6/run/PPLDEC0195Bd/processor0/system/TriacAlu/fvSchemes" Mapping fields Mapping field cellToRegion Deleting empty patches Writing new mesh Writing addressing to base mesh Writing map pointRegionAddressing from region3 points back to base mesh. Writing map faceRegionAddressing from region3 faces back to base mesh. Writing map cellRegionAddressing from region3 cells back to base mesh. Writing map boundaryRegionAddressing from region3 boundary back to base mesh. Region 4 -------- Creating mesh for region 4 TriacPlastique Testing:"/home/utilisateur/OpenFOAM/OpenFOAM-6/run/PPLDEC0195Bd/processor0/system/TriacPlastique/fvSchemes" Mapping fields Mapping field cellToRegion Deleting empty patches Writing new mesh Writing addressing to base mesh Writing map pointRegionAddressing from region4 points back to base mesh. Writing map faceRegionAddressing from region4 faces back to base mesh. Writing map cellRegionAddressing from region4 cells back to base mesh. Writing map boundaryRegionAddressing from region4 boundary back to base mesh. End Finalising parallel run [FRRO741:29023] 5 more processes have sent help message help-mpi-btl-base.txt / btl:no-nics [FRRO741:29023] Set MCA parameter "orte_base_help_aggregate" to 0 to see all help / error messages Last edited by GuiMagyar; September 10, 2019 at 08:01. Reason: update |
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September 10, 2019, 09:59 |
Update
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#2 |
New Member
guimagyar
Join Date: Aug 2019
Posts: 2
Rep Power: 0 |
Still no solution ...
But If I move the locationInMesh to (5e-3 5e-3 5e-3) Then AirAmbiant and region 1 are now inversed cf attached screenshot... I really do not understand what is happening xD No clue ? ( |
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August 4, 2023, 09:48 |
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#3 |
New Member
Atefeh T
Join Date: Jan 2023
Posts: 6
Rep Power: 3 |
hey, did you find out how to get rid of this extra region? I have exactly the same problem
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August 4, 2023, 12:38 |
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#4 |
Senior Member
Yann
Join Date: Apr 2012
Location: France
Posts: 1,174
Rep Power: 27 |
Hello,
I'm not sure it will solve the issue, but you might try using the -cellZonesOnly option rather than -cellZones. Hope this helps, Yann |
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