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October 4, 2012, 05:35 |
Meshing Error
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#1 |
Member
Sagun Tripathi
Join Date: Aug 2012
Location: Amherst, USA
Posts: 78
Rep Power: 13 |
Hello everyone!,
I'm trying to simulate two-phase laminar flow around a cylinder in 2-D (the z-dimension is empty). However, on doing checkMesh I get this error: Checking topology... Boundary definition OK. ***Total number of faces on empty patches is not divisible by the number of cells in the mesh. Hence this mesh is not 1D or 2D. Failed 1 mesh checks. Here is how my blockMeshDict file looks like: convertToMeters 1; vertices ( (-30 15 0) (-2.121320 15 0) (2.121320 15 0) (30 15 0) (-30 2.121320 0) (-2.121320 2.121320 0) (2.121320 2.121320 0) (30 2.121320 0) (-30 -2.121320 0) (-2.121320 -2.121320 0) (2.121320 -2.121320 0) (30 -2.121320 0) (-30 -15 0) (-2.121320 -15 0) (2.121320 -15 0) (30 -15 0) (-30 15 0.5) (-2.121320 15 0.5) (2.121320 15 0.5) (30 15 0.5) (-30 2.121320 0.5) (-2.121320 2.121320 0.5) (2.121320 2.121320 0.5) (30 2.121320 0.5) (-30 -2.121320 0.5) (-2.121320 -2.121320 0.5) (2.121320 -2.121320 0.5) (30 -2.121320 0.5) (-30 -15 0.5) (-2.121320 -15 0.5) (2.121320 -15 0.5) (30 -15 0.5) (-30 15 1) (-2.121320 15 1) (2.121320 15 1) (30 15 1) (-30 2.121320 1) (-2.121320 2.121320 1) (2.121320 2.121320 1) (30 2.121320 1) (-30 -2.121320 1) (-2.121320 -2.121320 1) (2.121320 -2.121320 1) (30 -2.121320 1) (-30 -15 1) (-2.121320 -15 1) (2.121320 -15 1) (30 -15 1) ); blocks ( hex (4 5 1 0 20 21 17 16) (50 30 1) simpleGrading (1 1 1) hex (5 6 2 1 21 22 18 17) (20 30 1) simpleGrading (1 1 1) hex (6 7 3 2 22 23 19 18) (50 30 1) simpleGrading (1 1 1) hex (8 9 5 4 24 25 21 20) (50 20 1) simpleGrading (1 1 1) hex (10 11 7 6 26 27 23 22) (50 20 1) simpleGrading (1 1 1) hex (12 13 9 8 28 29 25 24) (50 30 1) simpleGrading (1 1 1) hex (13 14 10 9 29 30 26 25) (20 30 1) simpleGrading (1 1 1) hex (14 15 11 10 30 31 27 26) (50 30 1) simpleGrading (1 1 1) hex (20 21 17 16 36 37 33 32) (50 30 1) simpleGrading (1 1 1) hex (21 22 18 17 37 38 34 33) (20 30 1) simpleGrading (1 1 1) hex (22 23 19 18 38 39 35 34) (50 30 1) simpleGrading (1 1 1) hex (24 25 21 20 40 41 37 36) (50 20 1) simpleGrading (1 1 1) hex (26 27 23 22 42 43 39 38) (50 20 1) simpleGrading (1 1 1) hex (28 29 25 24 44 45 41 40) (50 30 1) simpleGrading (1 1 1) hex (29 30 26 25 45 46 42 41) (20 30 1) simpleGrading (1 1 1) hex (30 31 27 26 46 47 43 42) (50 30 1) simpleGrading (1 1 1) ); edges ( arc 5 6 (0 3 0) arc 6 10 (3 0 0) arc 9 10 (0 -3 0) arc 9 5 (-3 0 0) arc 21 22 (0 3 15) arc 26 22 (3 0 15) arc 25 26 (0 -3 15) arc 25 21 (-3 0 15) arc 37 38 (0 3 30) arc 42 38 (3 0 30) arc 41 42 (0 -3 30) arc 41 37 (-3 0 30) ); boundary ( cylinder { type wall; faces ( (5 21 22 6) (21 37 38 22) (6 22 26 10) (22 38 42 26) (10 26 25 9) (26 42 41 25) (9 25 21 5) (25 41 37 21) ); } inlet { type patch; faces ( (4 20 16 0) (20 36 32 16) (8 24 20 4) (24 40 36 20) (12 28 24 8) (28 44 40 24) ); } outlet { type patch; faces ( (3 19 23 7) (19 35 39 23) (7 23 27 11) (23 39 43 27) (11 27 31 15) (27 43 47 31) ); } sides { type empty; faces ( (16 17 1 0) (32 33 17 16) (17 18 2 1) (33 34 18 17) (18 19 3 2) (34 35 19 18) (12 13 29 28) (28 29 45 44) (13 14 30 29) (29 30 46 45) (14 15 31 30) (30 31 47 46) ); } lower { type patch; faces ( (0 1 5 4) (1 2 6 5) (2 3 7 6) (4 5 9 8) (6 7 11 10) (8 9 13 12) (9 10 14 13) (10 11 15 14) ); } atmosphere { type patch; faces ( (36 37 33 32) (37 38 34 33) (38 39 35 34) (40 41 37 36) (42 43 39 38) (44 45 41 40) (45 46 42 41) (46 47 43 42) ); } ); mergePatchPairs ( ); I'm very new to OpenFOAM and would really appreciate if someone can explain this error to me and how to go about fixing it. Thanks, Sagun |
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October 4, 2012, 05:46 |
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#2 |
Member
Sagun Tripathi
Join Date: Aug 2012
Location: Amherst, USA
Posts: 78
Rep Power: 13 |
Ah please ignore this thread. I found the mistake.
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