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[Other] checkMesh error (High aspect ratio cells found) |
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July 14, 2014, 07:55 |
checkMesh error (High aspect ratio cells found)
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#1 |
New Member
Ali Heidari
Join Date: May 2013
Location: Tehran,Iran
Posts: 6
Rep Power: 13 |
When i made a cubic geometry by the following blockMesh file, and checkMesh, i receive 3 errors (please see below). When i run paraFoam, everything looks nice.
How can i solve this problem??? Best regards. code: Code:
/*--------------------------------*- C++ -*----------------------------------*\ | ========= | | | \\ / F ield | OpenFOAM: The Open Source CFD Toolbox | | \\ / O peration | Version: 2.2.1 | | \\ / A nd | Web: www.OpenFOAM.com | | \\/ M anipulation | | \*---------------------------------------------------------------------------*/ FoamFile { version 2.0; format ascii; class dictionary; object blockMeshDict; } // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // convertToMeters 0.01; vertices ( (0 0 0) //0 (1 0 0) //1 (1 0 1) //2 (0 0 1) //3 (0 1 0) //4 (1 1 0) //5 (1 1 1) //6 (0 1 1) //7 ); blocks ( hex (0 1 2 3 4 5 6 7) (10 10 10) simpleGrading (1 1 1) ); edges ( ); boundary ( inlet { type patch; faces ( (0 1 5 4) ); } outlet { type patch; faces ( (3 2 6 7) ); } bottom { type wall; faces ( (0 3 7 4) ); } top { type wall; faces ( (1 2 6 5) ); } front { type wall; faces ( (4 5 6 7) ); } back { type wall; faces ( (0 1 2 3) ); } ); mergePatchPairs ( ); // ************************************************************************* // Code:
Checking geometry... Overall domain bounding box (0 0 0) (0.01 0.01 0.01) Mesh (non-empty, non-wedge) directions (1 1 1) Mesh (non-empty) directions (1 1 1) Boundary openness (5.64689e-18 -5.64689e-18 5.64689e-18) OK. ***High aspect ratio cells found, Max aspect ratio: 6.29961e+193, number of cells 1000 <<Writing 1000 cells with high aspect ratio to set highAspectRatioCells Minimum face area = 1e-06. Maximum face area = 1e-06. Face area magnitudes OK. Min volume = 2e-300. Max volume = 2e-300. Total volume = 2e-297. Cell volumes OK. Mesh non-orthogonality Max: 180 average: 180 ***Number of non-orthogonality errors: 2700. <<Writing 2700 non-orthogonal faces to set nonOrthoFaces ***Error in face pyramids: 6000 faces are incorrectly oriented. <<Writing 3300 faces with incorrect orientation to set wrongOrientedFaces Max skewness = 2.5e-06 OK. Coupled point location match (average 0) OK. Failed 3 mesh checks. End |
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August 9, 2014, 10:33 |
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#2 |
Senior Member
Nima Samkhaniani
Join Date: Sep 2009
Location: Tehran, Iran
Posts: 1,267
Blog Entries: 1
Rep Power: 25 |
Hello Dear Ali
it may returns to face orientation in blockMesh, you can use cavity geometry to create yours
__________________
My Personal Website (http://nimasamkhaniani.ir/) Telegram channel (https://t.me/cfd_foam) |
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