| GuiMagyar |
September 6, 2019 11:48 |
SnappyHexMesh/splitMeshRegion : region1 in zone "-1" anormally generated
1 Attachment(s)
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 ?:confused:
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
(
);
// ************************************************************************* //
SnappyHexMesh :
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;
// ************************************************************************* //
splitMeshRegions Log :
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
|
