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February 5, 2009, 07:02 |
Hi Forum,
for a case of CFD
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#1 |
New Member
Denk Marcus
Join Date: Mar 2009
Posts: 13
Rep Power: 17 |
Hi Forum,
for a case of CFD i created a mesh with Cubit 11.0 and converted it into a Fluent-Mesh. I imported the mesh into OpenFoam with fluent3DMeshToFoam and everything was allright. But when i did checkMesh then Boundary openness was about a scale of 1e-5 in the x-direction. Does somebody has an idea to solve this problem. Iám new in CFD. for better understanding i post the error message of checkMesh: "Checking topology... Boundary definition OK. Point usage OK. Upper triangular ordering OK. ***Open cells found, number of cells: 54. This problem may be fixable using the zipUpMesh utility. <<Writing 54 cells with over used edges to set zipUpCells Face vertices OK. Face-face connectivity OK. Number of regions: 1 (OK). Checking patch topology for multiply connected surfaces ... Patch Faces Points Surface wall_1 0 0 ok (empty) sideset_zone_21 2677 2789 ok (not multiply connected) sideset_zone_22 2677 2789 ok (not multiply connected) sideset_zone_23 73438 73673 multiply connected surface (shared edge) <<Writing 7 conflicting points to set nonManifoldPoints Checking geometry... Domain bounding box: (-0.446233 -0.157002 0.0975904) (-0.198251 0.838998 0.334923) ***Boundary openness (0.000656546 1.6448e-16 1.00521e-14) possible hole in boundary description. ***Open cells found, max cell openness: 1, number of open cells 54 <<Writing 54 non closed cells to set nonClosedCells Minumum face area = 7.18776e-06. Maximum face area = 2.64301e-05. Face area magnitudes OK. Min volume = 2.84406e-08. Max volume = 1.0496e-07. Total volume = 0.0442321. Cell volumes OK. Mesh non-orthogonality Max: 26.3664 average: 3.77831 Non-orthogonality check OK. Face pyramids OK. Max skewness = 0.488558 OK. Min/max edge length = 0.002 0.00617666 OK. All angles in faces OK. Face flatness (1 = flat, 0 = butterfly) : average = 0.999997 min = 0.987202 All face flatness OK. Failed 3 mesh checks. End" |
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February 5, 2009, 07:16 |
Hi Marcus,
I also use CUBIT
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#2 |
Senior Member
Tian
Join Date: Mar 2009
Location: Berlin, germany
Posts: 119
Rep Power: 17 |
Hi Marcus,
I also use CUBIT 11.1 and I import the mesh in OF with: fluentMeshToFoam. Did you try it also and checked the mesh again? Bye Thomas
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February 5, 2009, 08:10 |
But fluentMeshToFoam is only f
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#3 |
New Member
Denk Marcus
Join Date: Mar 2009
Posts: 13
Rep Power: 17 |
But fluentMeshToFoam is only for 2D cases, isnīt it ?
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February 5, 2009, 08:12 |
But fluentMeshToFoam is only f
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#4 |
New Member
Denk Marcus
Join Date: Mar 2009
Posts: 13
Rep Power: 17 |
But fluentMeshToFoam is only for 2D cases, isnīt it ?
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February 5, 2009, 08:18 |
Hi Marcus,
I used it also f
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#5 |
Senior Member
Tian
Join Date: Mar 2009
Location: Berlin, germany
Posts: 119
Rep Power: 17 |
Hi Marcus,
I used it also for 3D cases. By the way, I got also some crazy error message if I used Fluent to OpenFOAM but all errors arised from my mistake in CUBIT. Bye Thomas
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February 5, 2009, 08:20 |
I tried to make fluentMeshToFo
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#6 |
New Member
Denk Marcus
Join Date: Mar 2009
Posts: 13
Rep Power: 17 |
I tried to make fluentMeshToFoam, but there is still an error:
I post it: T42@CFD:~/OpenFOAM/OpenFOAM-1.4.1/Cases> fluentMeshToFoam . WPcupopt ./WPcupopt/wpcupgasflowrev.msh -scale 0.001 /*---------------------------------------------------------------------------*\ | ========= | | | \ / F ield | OpenFOAM: The Open Source CFD Toolbox | | \ / O peration | Version: 1.4.1 | | \ / A nd | Web: http://www.openfoam.org | | \/ M anipulation | | \*---------------------------------------------------------------------------*/ Exec : fluentMeshToFoam . WPcupopt ./WPcupopt/wpcupgasflowrev.msh -scale 0.001 Date : Feb 05 2009 Time : 14:14:03 Host : CFD PID : 12813 Root : /home/T42/OpenFOAM/OpenFOAM-1.4.1/Cases Case : WPcupopt Nprocs : 1 Create time --> FOAM FATAL ERROR : fluentMeshToFoam: file "./WPcupopt/wpcupgasflowrev.msh" not found From function fluentToFoam::main(int argc, char *argv[]) in file fluentMeshToFoam.L at line 894. FOAM exiting T42@CFD:~/OpenFOAM/OpenFOAM-1.4.1/Cases> fluentMeshToFoam . WPcupopt ./WPcupopt/wpcupgasflow.msh -scale 0.001 /*---------------------------------------------------------------------------*\ | ========= | | | \ / F ield | OpenFOAM: The Open Source CFD Toolbox | | \ / O peration | Version: 1.4.1 | | \ / A nd | Web: http://www.openfoam.org | | \/ M anipulation | | \*---------------------------------------------------------------------------*/ Exec : fluentMeshToFoam . WPcupopt ./WPcupopt/wpcupgasflow.msh -scale 0.001 Date : Feb 05 2009 Time : 14:14:30 Host : CFD PID : 12819 Root : /home/T42/OpenFOAM/OpenFOAM-1.4.1/Cases Case : WPcupopt Nprocs : 1 Create time Dimension of grid: 3 Number of points: 744773 Reading points number of faces: 2155194 Reading uniform faces Reading uniform faces Reading uniform faces Reading uniform faces Reading uniform faces Number of cells: 705275 Other readCellGroupData: 18 1 367a3 1 4 Reading uniform cells Other readCellGroupData: 19 367a4 ac2fb 1 4 Reading uniform cells Read zone1:3 name:wall_1 patchTypeID:wall Reading zone data Read zone1:5 name:interior patchTypeID:interior Reading zone data Read zone1:21 name:sideset_zone_21 patchTypeID:wall Reading zone data Read zone1:22 name:sideset_zone_22 patchTypeID:wall Reading zone data Read zone1:23 name:sideset_zone_23 patchTypeID:wall Reading zone data Read zone1:24 name:fluid_1 patchTypeID:fluid Reading zone data Read zone1:25 name:fluid_2 patchTypeID:fluid Reading zone data FINISHED LEXING dimension of grid: 3 Creating shapes for 3-D cells Building patch-less mesh...--> FOAM Warning : From function polyMesh::polyMesh(... construct from shapes...) in file meshes/polyMesh/polyMeshFromShapeMesh.C at line 577 Found 78738 undefined faces in mesh; adding to default patch. done. Building boundary and internal patches. Creating patch 0 for zone: 3 start: 1 end: 0 type: wall name: wall_1 Creating patch 1 for zone: 5 start: 1 end: 2076402 type: interior name: interior Creating patch 2 for zone: 21 start: 2076403 end: 2079079 type: wall name: sideset_zone_21 Creating patch 3 for zone: 22 start: 2079080 end: 2081756 type: wall name: sideset_zone_22 Creating patch 4 for zone: 23 start: 2081757 end: 2155194 type: wall name: sideset_zone_23 #0 Foam::error::printStack(Foam:stream&) in "/home/T42/OpenFOAM/OpenFOAM-1.4.1/lib/linux64GccDPOpt/libOpenFOAM.so" #1 Foam::sigSegv::sigSegvHandler(int) in "/home/T42/OpenFOAM/OpenFOAM-1.4.1/lib/linux64GccDPOpt/libOpenFOAM.so" #2 ?? in "/lib64/libc.so.6" #3 main in "/home/T42/OpenFOAM/OpenFOAM-1.4.1/applications/bin/linux64GccDPOpt/fluentMeshTo Foam" #4 __libc_start_main in "/lib64/libc.so.6" #5 __gxx_personality_v0 in "/home/T42/OpenFOAM/OpenFOAM-1.4.1/applications/bin/linux64GccDPOpt/fluentMeshTo Foam" Speicherzugriffsfehler T42@CFD:~/OpenFOAM/OpenFOAM-1.4.1/Cases> checkMesh . WPcupopt /*---------------------------------------------------------------------------*\ | ========= | | | \ / F ield | OpenFOAM: The Open Source CFD Toolbox | | \ / O peration | Version: 1.4.1 | | \ / A nd | Web: http://www.openfoam.org | | \/ M anipulation | | \*---------------------------------------------------------------------------*/ Exec : checkMesh . WPcupopt Date : Feb 05 2009 Time : 14:15:23 Host : CFD PID : 12890 Root : /home/T42/OpenFOAM/OpenFOAM-1.4.1/Cases Case : WPcupopt Nprocs : 1 Create time Create polyMesh for time = constant --> FOAM FATAL ERROR : Cannot find file "points" in directory "constant/polyMesh" From function Time::findInstance(const word& dir, const word& name) in file db/Time/findInstance.C at line 133. FOAM exiting |
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February 5, 2009, 08:23 |
I tried to make fluentMeshToFo
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#7 |
New Member
Denk Marcus
Join Date: Mar 2009
Posts: 13
Rep Power: 17 |
I tried to make fluentMeshToFoam, but there is still an error:
I post it: T42@CFD:~/OpenFOAM/OpenFOAM-1.4.1/Cases> fluentMeshToFoam . WPcupopt ./WPcupopt/wpcupgasflowrev.msh -scale 0.001 /*---------------------------------------------------------------------------*\ | ========= | | | \ / F ield | OpenFOAM: The Open Source CFD Toolbox | | \ / O peration | Version: 1.4.1 | | \ / A nd | Web: http://www.openfoam.org | | \/ M anipulation | | \*---------------------------------------------------------------------------*/ Exec : fluentMeshToFoam . WPcupopt ./WPcupopt/wpcupgasflowrev.msh -scale 0.001 Date : Feb 05 2009 Time : 14:14:03 Host : CFD PID : 12813 Root : /home/T42/OpenFOAM/OpenFOAM-1.4.1/Cases Case : WPcupopt Nprocs : 1 Create time --> FOAM FATAL ERROR : fluentMeshToFoam: file "./WPcupopt/wpcupgasflowrev.msh" not found From function fluentToFoam::main(int argc, char *argv[]) in file fluentMeshToFoam.L at line 894. FOAM exiting T42@CFD:~/OpenFOAM/OpenFOAM-1.4.1/Cases> fluentMeshToFoam . WPcupopt ./WPcupopt/wpcupgasflow.msh -scale 0.001 /*---------------------------------------------------------------------------*\ | ========= | | | \ / F ield | OpenFOAM: The Open Source CFD Toolbox | | \ / O peration | Version: 1.4.1 | | \ / A nd | Web: http://www.openfoam.org | | \/ M anipulation | | \*---------------------------------------------------------------------------*/ Exec : fluentMeshToFoam . WPcupopt ./WPcupopt/wpcupgasflow.msh -scale 0.001 Date : Feb 05 2009 Time : 14:14:30 Host : CFD PID : 12819 Root : /home/T42/OpenFOAM/OpenFOAM-1.4.1/Cases Case : WPcupopt Nprocs : 1 Create time Dimension of grid: 3 Number of points: 744773 Reading points number of faces: 2155194 Reading uniform faces Reading uniform faces Reading uniform faces Reading uniform faces Reading uniform faces Number of cells: 705275 Other readCellGroupData: 18 1 367a3 1 4 Reading uniform cells Other readCellGroupData: 19 367a4 ac2fb 1 4 Reading uniform cells Read zone1:3 name:wall_1 patchTypeID:wall Reading zone data Read zone1:5 name:interior patchTypeID:interior Reading zone data Read zone1:21 name:sideset_zone_21 patchTypeID:wall Reading zone data Read zone1:22 name:sideset_zone_22 patchTypeID:wall Reading zone data Read zone1:23 name:sideset_zone_23 patchTypeID:wall Reading zone data Read zone1:24 name:fluid_1 patchTypeID:fluid Reading zone data Read zone1:25 name:fluid_2 patchTypeID:fluid Reading zone data FINISHED LEXING dimension of grid: 3 Creating shapes for 3-D cells Building patch-less mesh...--> FOAM Warning : From function polyMesh::polyMesh(... construct from shapes...) in file meshes/polyMesh/polyMeshFromShapeMesh.C at line 577 Found 78738 undefined faces in mesh; adding to default patch. done. Building boundary and internal patches. Creating patch 0 for zone: 3 start: 1 end: 0 type: wall name: wall_1 Creating patch 1 for zone: 5 start: 1 end: 2076402 type: interior name: interior Creating patch 2 for zone: 21 start: 2076403 end: 2079079 type: wall name: sideset_zone_21 Creating patch 3 for zone: 22 start: 2079080 end: 2081756 type: wall name: sideset_zone_22 Creating patch 4 for zone: 23 start: 2081757 end: 2155194 type: wall name: sideset_zone_23 #0 Foam::error::printStack(Foam:stream&) in "/home/T42/OpenFOAM/OpenFOAM-1.4.1/lib/linux64GccDPOpt/libOpenFOAM.so" #1 Foam::sigSegv::sigSegvHandler(int) in "/home/T42/OpenFOAM/OpenFOAM-1.4.1/lib/linux64GccDPOpt/libOpenFOAM.so" #2 ?? in "/lib64/libc.so.6" #3 main in "/home/T42/OpenFOAM/OpenFOAM-1.4.1/applications/bin/linux64GccDPOpt/fluentMeshTo Foam" #4 __libc_start_main in "/lib64/libc.so.6" #5 __gxx_personality_v0 in "/home/T42/OpenFOAM/OpenFOAM-1.4.1/applications/bin/linux64GccDPOpt/fluentMeshTo Foam" Speicherzugriffsfehler T42@CFD:~/OpenFOAM/OpenFOAM-1.4.1/Cases> checkMesh . WPcupopt /*---------------------------------------------------------------------------*\ | ========= | | | \ / F ield | OpenFOAM: The Open Source CFD Toolbox | | \ / O peration | Version: 1.4.1 | | \ / A nd | Web: http://www.openfoam.org | | \/ M anipulation | | \*---------------------------------------------------------------------------*/ Exec : checkMesh . WPcupopt Date : Feb 05 2009 Time : 14:15:23 Host : CFD PID : 12890 Root : /home/T42/OpenFOAM/OpenFOAM-1.4.1/Cases Case : WPcupopt Nprocs : 1 Create time Create polyMesh for time = constant --> FOAM FATAL ERROR : Cannot find file "points" in directory "constant/polyMesh" From function Time::findInstance(const word& dir, const word& name) in file db/Time/findInstance.C at line 133. FOAM exiting |
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February 5, 2009, 08:29 |
Hi,
maybe you can send me y
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#8 |
Senior Member
Tian
Join Date: Mar 2009
Location: Berlin, germany
Posts: 119
Rep Power: 17 |
Hi,
maybe you can send me your CUB file? This evening I can have a look and test it with OF1.5. Bye Thomas
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March 26, 2010, 10:26 |
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#9 |
Senior Member
stephane sanchi
Join Date: Mar 2009
Posts: 314
Rep Power: 18 |
Hi Markus,
I have encounter the same problem. I have generated a 3D mesh with icemcfd hexa and saved the grid in fluent-v6 format. Then I have used the fluent3DMeshToFoam utility. With success. Then checkMesh : Checking geometry... Overall domain bounding box (-0.05910710787 -2.422435604 -4.610000591) (4.70996259 3.217448683 11.30000039) Mesh (non-empty, non-wedge) directions (1 1 1) Mesh (non-empty) directions (1 1 1) ***Boundary openness (0.373133555033 0.0329782447309 -6.55655408494e-11) possible hole in boundary description. ***Open cells found, max cell openness: 1, number of open cells 29457 Have you solved the problem of boundary openness ? Regards, Stephane. |
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March 26, 2010, 10:35 |
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#10 |
Senior Member
stephane sanchi
Join Date: Mar 2009
Posts: 314
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Hi,
To better understand the problem I have attached a picture showing the cells of the nonClosedCells set ! Stephane. |
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April 7, 2010, 10:56 |
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#11 |
Senior Member
stephane sanchi
Join Date: Mar 2009
Posts: 314
Rep Power: 18 |
Hi,
nobody has ever encountered this problem and solved it ? Stephane. |
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