Hi,<br><br>I found the problem was in Salome. i have checked with stl file which created using other packages in gmsh. It works well.<br><br>BTW, i have one more problem. I converted the created mesh into openfoam format. I got failed mesh error during checkMesh operation<br>
<br><br>Checking geometry...<br> Domain bounding box: (-50 -50 -50) (50 50 50)<br> Boundary openness (4.14122e-19 3.54948e-19 -5.92713e-20) OK.<br> ***High aspect ratio cells found, Max aspect ratio: 30829.5, number of cells 55<br>
<<Writing 55 cells with high aspect ratio to set highAspectRatioCells<br> Minumum face area = 0.000356307. Maximum face area = 124.208. Face area magnitudes OK.<br> Min volume = 5.21946e-10. Max volume = 442.292. Total volume = 999996. Cell volumes OK.<br>
Mesh non-orthogonality Max: 89.9711 average: 26.9608<br> *Number of severely non-orthogonal faces: 4211.<br> Non-orthogonality check OK.<br> <<Writing 4211 non-orthogonal faces to set nonOrthoFaces<br> Face pyramids OK.<br>
Max skewness = 3.86163 OK.<br> All angles in faces OK.<br> Face flatness (1 = flat, 0 = butterfly) : average = 1 min = 1<br> All face flatness OK.<br><br>Failed 1 mesh checks.<br><br>End<br><br><br><br>here i have seen non-orthogonal faces error. Can you tell me how to neglect those errors ?.<br>
<br> - Ranjith<br><br><div class="gmail_quote">On Wed, Jun 24, 2009 at 10:14 AM, Vadivelan C <span dir="ltr"><<a href="mailto:vc@tetrahedrix.com">vc@tetrahedrix.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Dear Christophe,<br><br>Apologize for tardy reply. <br><div class="im"><br><br><div class="gmail_quote"><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Info : Mesh 3D complete (8.23975 s)<br>
Info : 140728 vertices 283242 elements<br>
Error : ------------------------------<br>
Error : Mesh generation error summary<br>
Error : 0 warnings<br>
Error : 12 errors<br>
Error : Check the full log for details<br>
Error : ------------------------------<br>
<br>
Can you tell me what mistake i am doing ?. I attached geo file and stl file which i used.<br>
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does it work with the default algorithm (delaunay) ?<br>
</blockquote></div><br></div>Yes it works with delaunay algorithm. But i got error message during the meshing process<br><br>Warning: Polygon 1 has two identical verts in facet 1588.<br>Warning: Polygon 1 has two identical verts in facet 1628.<br>
Warning: Polygon 1 has two identical verts in facet 1713.<br><br><br>I created a simple sphere geometry in salome and tried meshing with and without extrusion layer. <br>Without extrusion layer i got the above error and with extrusion layer i got the below error and meshing failed. I attached the stl file which i used.<br>
<br><br><br> Constraining facets.<br>Error: Invalid PLC.<br> Two subfaces (478, 9566, 9553) and (8000, 5173, 9583)<br> are found intersecting each other.<br> Hint: Use -d switch to find all intersecting facets.<br>Error : Self intersecting surface mesh, computing intersections (this could take a while)<br>
Constructing Delaunay tetrahedralization.<br> Creating initial tetrahedralization.<br> Incrementally inserting points.<br> 58044 Flips (T23 31220, T32 24157, T22 2666, T44 1)<br>Delaunay seconds: 0.3<br>Creating surface mesh.<br>
Constructing mapping from indices to points.<br> Constructing mapping from points to tetrahedra.<br>Warning: Polygon 1 has two identical verts in facet 1588.<br>Warning: Polygon 1 has two identical verts in facet 1628.<br>
Warning: Polygon 1 has two identical verts in facet 1713.<br>Warning: Polygon 1 has two identical verts in facet 1738.<br>Warning: Polygon 1 has two identical verts in facet 2724.<br>Warning: Polygon 1 has two identical verts in facet 4176.<br>
Warning: Polygon 1 has two identical verts in facet 4632.<br>Warning: Polygon 1 has two identical verts in facet 7172.<br> Unifying segments.<br> Constructing mapping from points to subfaces.<br> Merging coplanar facets.<br>
Detecting intersecting facets.<br> Facet #1996 intersects facet #3361 at triangles:<br> (2794, 1761, 2795) and (3083, 2794, 2453)<br> Facet #1996 intersects facet #5520 at triangles:<br> (2794, 1761, 2795) and (2452, 3083, 2453)<br>
<br><br> Thanks<br> - Ranjith<br><br>
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