# ANew Meshing Question

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 April 3, 2013, 09:31 ANew Meshing Question #1 New Member   chaoqing min Join Date: Mar 2013 Posts: 10 Rep Power: 4 These are my case blockMeshDic and problem being output as follows: case blockMeshDic: convertToMeters 1; vertices ( (0 0 0) (0.1 0 0) (0 0.1 0) (0 0 1) (0.1 0 1) (0 0.1 1) ); blocks ( hex (0 1 4 3 2 2 5 5) (20 200 20) simpleGrading (1 1 1) ); edges ( arc 1 2 (0.0707107 0.0707107 0) arc 4 5 (0.0707107 0.0707107 1) ); boundary ( down { type symmetryplane; faces ( (0 1 4 3) ); } left { type symmetryplane; faces ( (0 3 5 2) ); } curve { type patch; faces ( (1 2 5 4) ); } inlet { type patch; faces ( (0 1 2 2) ); } outlet { type patch; faces ( (3 4 5 5) ); } ); mergePatchPairs ( ); Problem: Create time Creating block mesh from "/home/ifas/pipe/constant/polyMesh/blockMeshDict" Creating curved edges Creating topology blocks Creating topology patches Creating block mesh topology --> FOAM Warning : From function cellModel::mag(const labelList&, const pointField&) in file meshes/meshShapes/cellModel/cellModel.C at line 128 zero or negative pyramid volume: -0.000833333 for face 0 --> FOAM Warning : From function cellModel::mag(const labelList&, const pointField&) in file meshes/meshShapes/cellModel/cellModel.C at line 128 zero or negative pyramid volume: -0.000833333 for face 1 --> FOAM Warning : From function cellModel::mag(const labelList&, const pointField&) in file meshes/meshShapes/cellModel/cellModel.C at line 128 zero or negative pyramid volume: -0.000833333 for face 2 --> FOAM Warning : From function cellModel::mag(const labelList&, const pointField&) in file meshes/meshShapes/cellModel/cellModel.C at line 128 zero or negative pyramid volume: -0.000833333 for face 3 --> FOAM Warning : From function cellModel::mag(const labelList&, const pointField&) in file meshes/meshShapes/cellModel/cellModel.C at line 128 zero or negative pyramid volume: -0.00166667 for face 4 --> FOAM Warning : From function blockMesh::createTopology(IOdictionary&) in file blockMesh/blockMeshTopology.C at line 255 negative volume block : 0, probably defined inside-out --> FOAM Warning : From function polyMesh:olyMesh(... construct from shapes...) in file meshes/polyMesh/polyMeshFromShapeMesh.C at line 888 Found 1 undefined faces in mesh; adding to default patch. Check topology Basic statistics Number of internal faces : 0 Number of boundary faces : 6 Number of defined boundary faces : 6 Number of undefined boundary faces : 0 Checking patch -> block consistency Creating block offsets Creating merge list . Creating polyMesh from blockMesh Creating patches Creating cells Creating points with scale 1 Writing polyMesh ---------------- Mesh Information ---------------- boundingBox: (0 0 0) (0.1 0.1 1) nPoints: 84621 nCells: 80000 nFaces: 244400 nInternalFaces: 231600 ---------------- Patches ---------------- patch 0 (start: 231600 size: 4000) name: down patch 1 (start: 235600 size: 4000) name: left patch 2 (start: 239600 size: 4000) name: curve patch 3 (start: 243600 size: 400) name: inlet patch 4 (start: 244000 size: 400) name: outlet patch 5 (start: 244400 size: 0) name: defaultFaces End Last edited by nennbs; April 3, 2013 at 09:34. Reason: something wrong

 April 3, 2013, 09:46 #2 Senior Member   Alexey Matveichev Join Date: Aug 2011 Location: Nancy, France Posts: 1,109 Rep Power: 19 hex (1 0 3 4 2 2 5 5) (20 200 20) simpleGrading (1 1 1)

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