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August 20, 2008, 02:51 |
hi,
i am doing a simulation a
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#1 |
Senior Member
weihong yao
Join Date: Mar 2009
Posts: 117
Rep Power: 17 |
hi,
i am doing a simulation about wind pressure on a 6m cube,i put the 6m*6m*6m cube into 192m*120m*60m box.when i extrudeMesh,it show follow message; FOAM FATAL ERROR : Trying to specify a boundary face 4(0 3 7 4) on the face on cell 14 which is either an internal face or already belongs to some other patch. This is face 0 of patch 2 named front.#0 Foam::error::printStack(Foam:stream&) #1 Foam::error::abort() #2 Foam::polyMesh::polyMesh(Foam::IOobject const&, Foam::Field<foam::vector<double> > const&, Foam::List<foam::cellshape> const&, Foam::List<foam::list<foam::face> > const&, Foam::List<foam::word> const&, Foam::List<foam::word> const&, Foam::word const&, Foam::List<foam::word> const&) #3 Foam::blockMesh::createTopology(Foam::IOdictionary &) #4 Foam::blockMesh::blockMesh(Foam::IOdictionary&) #5 main #6 __libc_start_main #7 __gxx_personality_v0 at /usr/src/packages/BUILD/glibc-2.3/csu/../sysdeps/i386/elf/start.S:122 From function polyMesh::polyMesh ( const IOobject& io, const pointField& points, const cellShapeList& cellsAsShapes, const faceListList& boundaryFaces, const wordList& boundaryPatchTypes, const wordList& boundaryPatchNames, const word& defaultBoundaryPatchType ) in file meshes/polyMesh/polyMeshFromShapeMesh.C at line 482. FOAM aborting my blockMesh file are: convertToMeters 1; vertices ( (-3 -3 0) (3 -3 0) (3 3 0) (-3 3 0) (-3 -3 6) (3 -3 6) (3 3 6) (-3 3 6) (-39 -3 0) (-39 3 0) (-39 -3 6) (-39 3 6) (153 -3 0) (153 3 0) (153 -3 6) (153 3 6) (-3 -60 0) (3 -60 0) (-3 -60 6) (3 -60 6) (-3 60 0) (3 60 0) (-3 60 6) (3 60 6) (-39 -60 0) (153 -60 0) (153 60 0) (-39 60 0) (-39 -60 6) (153 -60 6) (153 60 6) (-39 60 6) (-39 -60 60) (153 -60 60) (153 60 60) (-39 60 60) (-39 -3 60) (-39 3 60) (-3 -60 60) (3 -60 60) (153 -3 60) (153 3 60) (-3 60 60) (3 60 60) (-3 -3 60) (3 -3 60) (3 3 60) (-3 3 60) ); blocks ( hex (24 16 0 8 28 18 4 10) (36 57 6) simpleGrading (1 1 1) hex (28 18 4 10 32 38 44 36) (36 57 54) simpleGrading (1 1 1) hex (16 17 1 0 18 19 5 4) (6 57 6) simpleGrading (1 1 1) hex (18 19 5 4 38 39 45 44) (6 57 54) simpleGrading (1 1 1) hex (17 25 12 1 19 29 14 5) (150 57 6) simpleGrading (1 1 1) hex (19 29 14 5 39 33 40 45) (150 57 54) simpleGrading (1 1 1) hex (1 12 13 2 5 14 15 6) (150 6 6) simpleGrading (1 1 1) hex (5 14 15 6 45 40 41 46) (150 6 54) simpleGrading (1 1 1) hex (2 13 26 21 6 15 30 23) (150 57 6) simpleGrading (1 1 1) hex (6 15 30 23 46 41 34 43) (150 57 54) simpleGrading (1 1 1) hex (3 2 21 20 7 6 23 22) (6 57 6) simpleGrading (1 1 1) hex (7 6 23 22 47 46 43 42) (6 57 54) simpleGrading (1 1 1) hex (9 3 20 27 11 7 22 31) (36 57 6) simpleGrading (1 1 1) hex (11 7 22 31 37 47 42 35) (36 57 54) simpleGrading (1 1 1) hex (8 0 3 9 10 4 7 11) (36 6 6) simpleGrading (1 1 1) hex (10 4 7 11 36 44 47 37) (36 6 54) simpleGrading (1 1 1) hex (4 5 6 7 44 45 46 47) (6 6 54) simpleGrading (1 1 1) hex (0 1 2 3 4 5 6 7) (6 6 6) edgeGrading (1 1 1 1 1 1 1 1 1 1 1 1) ); edges ( ); patches ( patch inlet ( (27 9 11 31) (37 11 31 35) (9 8 10 11) (11 10 36 37) (8 24 28 10) (10 28 32 36) ) patch outlet ( (25 12 14 29) (29 14 40 33) (12 13 15 14) (14 15 41 40) (13 26 30 15) (15 30 34 41) ) wall front ( (0 3 7 4) ) wall <back> ( (1 2 6 5) ) wall <left> ( (0 1 5 4) ) wall <right> ( (2 3 7 6) ) wall <top> ( (4 5 6 7) ) empty <wall> ( (24 16 18 28) (28 18 38 32) (16 17 19 18) (18 19 39 38) (17 25 29 19) (19 29 33 39) (26 21 23 30) (30 23 43 34) (21 20 22 23) (23 22 42 43) (20 27 31 22) (22 31 35 42) (32 38 44 36) (44 36 37 47) (47 37 35 42) (38 39 45 44) (44 45 46 47) (47 46 43 42) (39 33 40 45) (40 45 46 41) (41 46 43 34) (16 24 8 0) (0 8 9 3) (3 9 27 20) (17 16 0 1) (2 3 20 21) (25 17 1 12) (12 1 2 13) (13 2 21 26) ) wall <bottom> ( (0 1 2 3) ) ); mergePatchPairs ( ); would anyone help me? |
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August 20, 2008, 04:03 |
Run blockMesh with -blockTopol
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#2 |
Senior Member
Mattijs Janssens
Join Date: Mar 2009
Posts: 1,419
Rep Power: 26 |
Run blockMesh with -blockTopology option. This will write a .obj file which can be visualised with e.g. javaview or (with objToVTK) with paraview. Both have the option of displaying vertex numbers (with selecting and selection inspector in paraview). Very useful to debug blockMeshes.
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August 20, 2008, 05:39 |
I have written an application
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#3 |
Senior Member
Gavin Tabor
Join Date: Mar 2009
Posts: 181
Rep Power: 17 |
I have written an application called simpleViewer based on blockMesh, which visualises the block structure of a blockMeshDict file for you. Uses FOX/OpenGL. It works for OF1.4.1; I'm guessing making it work for 1.5 would not be too hard. Email me at g.r.tabor@ex.ac.uk if you would like to try with this.
Gavin |
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August 20, 2008, 22:36 |
hi Mattijs,
it can't work.whe
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#4 |
Senior Member
weihong yao
Join Date: Mar 2009
Posts: 117
Rep Power: 17 |
hi Mattijs,
it can't work.when i type blockMesh <root> <case> -blockTopology.it show: FOAM FATAL ERROR : Trying to specify a boundary face 4(0 3 7 4) on the face on cell 14 which is either an internal face or already belongs to some other patch. This is face 0 of patch 2 named front.#0 Foam::error::printStack(Foam:stream&) #1 Foam::error::abort() #2 Foam::polyMesh::polyMesh(Foam::IOobject const&, Foam::Field<foam::vector<double> > const&, Foam::List<foam::cellshape> const&, Foam::List<foam::list<foam::face> > const&, Foam::List<foam::word> const&, Foam::List<foam::word> const&, Foam::word const&, Foam::List<foam::word> const&) #3 Foam::blockMesh::createTopology(Foam::IOdictionary &) #4 Foam::blockMesh::blockMesh(Foam::IOdictionary&) #5 main #6 __libc_start_main #7 __gxx_personality_v0 at /usr/src/packages/BUILD/glibc-2.3/csu/../sysdeps/i386/elf/start.S:122 From function polyMesh::polyMesh ( const IOobject& io, const pointField& points, const cellShapeList& cellsAsShapes, const faceListList& boundaryFaces, const wordList& boundaryPatchTypes, const wordList& boundaryPatchNames, const word& defaultBoundaryPatchType ) in file meshes/polyMesh/polyMeshFromShapeMesh.C at line 482. FOAM aborting so how do i fix it? |
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August 21, 2008, 16:21 |
I just went through your block
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#5 |
Senior Member
Mattijs Janssens
Join Date: Mar 2009
Posts: 1,419
Rep Power: 26 |
I just went through your blockMeshDict. Set all block sizes to (1 1 1) so there are no matching errors. Then commented out all patch specifications (front, back, left, right, top) that give errors. Now with forementioned -blockTopology start putting patches and block sizes back in.
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August 22, 2008, 21:35 |
hi,
thank you!but now what ca
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#6 |
Senior Member
weihong yao
Join Date: Mar 2009
Posts: 117
Rep Power: 17 |
hi,
thank you!but now what can I do? |
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August 24, 2008, 21:27 |
hi Mattijs,
i am poor in Engl
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#7 |
Senior Member
weihong yao
Join Date: Mar 2009
Posts: 117
Rep Power: 17 |
hi Mattijs,
i am poor in English.so i don't know what to do. would you tell me the step in detail.please... |
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