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February 3, 2010, 23:26 |
how to deal with the nonOrhoFaces
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#1 |
New Member
liying
Join Date: Apr 2009
Posts: 6
Rep Power: 17 |
hello everyone, I have some troubles with the mesh.
The mesh was made by CFX, and the cells' type is tetrahedra. After checkMesh, it shows there are too many nonOrthoFaces to make the iteration diverge. The checkMesh file: Code:
Checking topology... Boundary definition OK. Point usage OK. Upper triangular ordering OK. Face vertices OK. Number of regions: 1 (OK). Checking patch topology for multiply connected surfaces ... Patch Faces Points Surface topology (patch name) 372664 186090 Point 127825 uses faces which are not connected through an edge This means that the surface formed by this patched is multiply connected at this point Connected (patch) faces: 6659 16485 17064 38140 241882 313275 Unconnected (patch) faces: 13991 16488 16491 17666 38144 Point 127826 uses faces which are not connected through an edge This means that the surface formed by this patched is multiply connected at this point Connected (patch) faces: 6660 7667 17063 25602 194595 299954 Unconnected (patch) faces: 12536 13991 16488 23034 194258 multiply connected (shared point) <<Writing 2 conflicting points to set nonManifoldPoints Checking geometry... Overall domain bounding box (0.000979531 -0.123426 -0.101891) (0.522993 0.130146 0.262215) Mesh (non-empty, non-wedge) directions (1 1 1) Mesh (non-empty) directions (1 1 1) Boundary openness (-7.8781261e-17 -2.6424622e-17 -1.5460646e-17) OK. Max cell openness = 6.3394809e-16 OK. Max aspect ratio = 96.353874 OK. Minumum face area = 6.6014121e-09. Maximum face area = 7.6311548e-05. Face area magnitudes OK. Min volume = 4.206598e-13. Max volume = 1.6603801e-07. Total volume = 0.0099574591. Cell volumes OK. Mesh non-orthogonality Max: 89.059799 average: 26.089762 *Number of severely non-orthogonal faces: 10256. Non-orthogonality check OK. <<Writing 10256 non-orthogonal faces to set nonOrthoFaces Face pyramids OK. Max skewness = 2.9545321 OK. Mesh OK. Code:
cellSet nonOrthoFacesCells new faceToCell nonOrthoFaces any cellSet c0 new cellSet c0 add cellToCell nonOrthoFacesCells cellSet c0 invert Though nonOrhoFaces are OK, but the region is broken into many parts. the checkMesh file: Code:
Checking topology... Boundary definition OK. Point usage OK. Upper triangular ordering OK. Face vertices OK. *Number of regions: 116 The mesh has multiple regions which are not connected by any face. <<Writing region information to "0/cellToRegion" Checking patch topology for multiply connected surfaces ... Patch Faces Points Surface topology (patch name) 381058 188701 multiply connected (shared edge) <<Writing 1252 conflicting points to set nonManifoldPoints Checking geometry... Overall domain bounding box (0.000979531 -0.123426 -0.101891) (0.522993 0.130146 0.262215) Mesh (non-empty, non-wedge) directions (1 1 1) Mesh (non-empty) directions (1 1 1) Boundary openness (-1.0308673e-16 2.4857084e-17 2.3941526e-17) OK. Max cell openness = 6.2242717e-16 OK. Max aspect ratio = 51.108433 OK. Minumum face area = 9.7422984e-09. Maximum face area = 7.6311548e-05. Face area magnitudes OK. Min volume = 7.3026939e-13. Max volume = 1.6603801e-07. Total volume = 0.0099468142. Cell volumes OK. Mesh non-orthogonality Max: 69.999223 average: 25.394174 Non-orthogonality check OK. Face pyramids OK. Max skewness = 3.1020545 OK. Mesh OK. The solver is interFoam. I wonder how to deal with the nonOrthoFaces. help me, please. And thank you for everyone. |
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March 23, 2010, 16:25 |
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#2 |
New Member
Michael Lawson
Join Date: Apr 2009
Location: NREL - Boulder, CO
Posts: 11
Rep Power: 17 |
Hi,
I'm having the same problem with transientSimpleFoam after removing cells that were attached to nonOrthoFaces. Were you able to find a solution to this problem? Thanks, -Mike |
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January 14, 2012, 20:07 |
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#3 |
New Member
Join Date: Nov 2011
Posts: 6
Rep Power: 14 |
Hello,
I'm new here and I'm new in using OpenFoam. My problem is almost the same with simpleFoam. I've deleted nonOrthoFaces with setSet and now I have also the error after checkMesh that the mesh has multiple regions which are not connected by any face. Maybe anybody can tell me how to solve this problem? Thanks |
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