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[Commercial meshers] What's wrong with "frontandback empty"? |
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August 6, 2009, 08:18 |
What's wrong with "frontandback empty"?
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#1 |
Senior Member
Sandy Lee
Join Date: Mar 2009
Posts: 213
Rep Power: 18 |
Hi guys, when I import my gambit .neu file into OpenFOAM, I check the mesh is OK. However, after I change the frontandback into empty (2D mesh) and check the mesh again, I get error message as follow:
/*---------------------------------------------------------------------------*\ | ========= | | | \\ / F ield | OpenFOAM: The Open Source CFD Toolbox | | \\ / O peration | Version: 1.5 | | \\ / A nd | Web: http://www.OpenFOAM.org | | \\/ M anipulation | | \*---------------------------------------------------------------------------*/ Exec : checkMesh Date : Aug 07 2009 Time : 01:55:47 Host : localhost.localdomain PID : 5190 Case : /root/OpenFOAM/root-1.5/run/tutorials/LesInterPhaseChangeFoam/Hydrofoil/Sixdegree nProcs : 1 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // Create time Create polyMesh for time = constant Time = constant Mesh stats points: 91414 internal points: 0 faces: 181229 internal faces: 89815 cells: 45174 boundary patches: 6 point zones: 0 face zones: 0 cell zones: 0 Number of cells of each type: hexahedra: 45174 prisms: 0 wedges: 0 pyramids: 0 tet wedges: 0 tetrahedra: 0 polyhedra: 0 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 inlet 103 208 ok (non-closed singly connected) outlet 158 318 ok (non-closed singly connected) up 237 476 ok (non-closed singly connected) down 236 474 ok (non-closed singly connected) frontandback 90348 91414 ok (non-closed singly connected) foil 332 664 ok (non-closed singly connected) Checking geometry... Overall domain bounding box (-10 -10 0) (30 10 0.007) Mesh (non-empty) directions (1 1 0) Mesh (non-empty, non-wedge) dimensions 2 ***Number of edges not aligned with or perpendicular to non-empty directions: 38113 <<Writing 76226 points on non-aligned edges to set nonAlignedEdges Boundary openness (-8.9509e-24 9.15928e-22 -1.31298e-19) OK. Max cell openness = 2.56232e-16 OK. Max aspect ratio = 287.879 OK. Minumum face area = 2.19292e-05. Maximum face area = 0.452831. Face area magnitudes OK. Min volume = 2.41268e-07. Max volume = 0.00316982. Total volume = 5.29651. Cell volumes OK. Mesh non-orthogonality Max: 39.8412 average: 5.87407 Non-orthogonality check OK. Face pyramids OK. Max skewness = 0.763965 OK. Failed 1 mesh checks. End ============================== What's wrong with it? Could somebody help me out? Thanks a lot. |
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