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[Technical] Questoion about nonMainfoldPoint and nonOrthoFaces |
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June 24, 2013, 10:47 |
Questoion about nonMainfoldPoint and nonOrthoFaces
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New Member
Filip Gjetvaj
Join Date: Mar 2013
Location: Montpellier, FR
Posts: 17
Rep Power: 13 |
Hello,
I created a mesh with Avizo and then used Gmsh and enGrid to transform it to OpenFoam. When I try to run my case with this mesh it always fail but it works with other meshes. Therefore it is reasonable to assume that the problem is somewhere in the mesh check Mesh writes Mesh OK, but I am concerned about nonMainfoldPoint and nonOrthoFaces which occur in my polyMesh folder. I cannot find any documentation regarding this topic so if somebody could tell me what to do or where to look for an answer check Mesh gives output like Code:
/*---------------------------------------------------------------------------*\ | ========= | | | \\ / F ield | OpenFOAM: The Open Source CFD Toolbox | | \\ / O peration | Version: 2.2.0 | | \\ / A nd | Web: www.OpenFOAM.org | | \\/ M anipulation | | \*---------------------------------------------------------------------------*/ Build : 2.2.0-5be49240882f Exec : checkMesh Date : Jun 24 2013 Time : 16:29:00 Host : "zeus" PID : 7719 Case : /home/filip/OpenFOAM/proba/moje_2 nProcs : 1 sigFpe : Enabling floating point exception trapping (FOAM_SIGFPE). fileModificationChecking : Monitoring run-time modified files using timeStampMaster allowSystemOperations : Disallowing user-supplied system call operations // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // Create time Create polyMesh for time = 0 Time = 0 Mesh stats points: 95290 faces: 947476 internal faces: 875052 cells: 455632 faces per cell: 4 boundary patches: 3 point zones: 0 face zones: 0 cell zones: 0 Overall number of cells of each type: hexahedra: 0 prisms: 0 wedges: 0 pyramids: 0 tet wedges: 0 tetrahedra: 455632 polyhedra: 0 Checking topology... Boundary definition OK. Cell to face addressing OK. Point usage OK. Upper triangular ordering OK. Face vertices OK. *Number of regions: 4 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 Inlet 1966 1143 ok (non-closed singly connected) Outlet 1962 1132 ok (non-closed singly connected) wall 68496 34516 multiply connected (shared edge) <<Writing 8 conflicting points to set nonManifoldPoints Checking geometry... Overall domain bounding box (-5.2703e-07 -5.57384e-07 -5.82047e-07) (0.00141052 0.0014106 0.00141059) Mesh (non-empty, non-wedge) directions (1 1 1) Mesh (non-empty) directions (1 1 1) Boundary openness (1.4271e-17 4.92582e-17 -2.06799e-17) OK. Max cell openness = 2.7799e-16 OK. Max aspect ratio = 15.936 OK. Minimum face area = 1.72258e-11. Maximum face area = 1.07184e-09. Face area magnitudes OK. Min volume = 5.78296e-17. Max volume = 1.01736e-14. Total volume = 6.68254e-10. Cell volumes OK. Mesh non-orthogonality Max: 78.3513 average: 21.5589 *Number of severely non-orthogonal faces: 6. Non-orthogonality check OK. <<Writing 6 non-orthogonal faces to set nonOrthoFaces Face pyramids OK. Max skewness = 3.02936 OK. Coupled point location match (average 0) OK. Mesh OK. End Filip |
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