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Sig11 on using 'tet' in blockMesh

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Old   October 14, 2013, 05:58
Default Sig11 on using 'tet' in blockMesh
  #1
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Ruud Vlaming
Join Date: Aug 2013
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Hi folks,

When trying a 'tet' in blockmesh I get a Sig11. Below is my file (slightly condensed), and underneath the console result. Is it forbidden to use 'tet' in
blockMesh? And if not, what am i doing wrong? It looks that everything goes well until the merge list.

Code:
FoamFile
{   version     2.0;
    format      ascii;
    class       dictionary;
    object      blockMeshDict; }

convertToMeters 1;

vertices
(   (0 0 0) 
    (1 0 0) 
    (0 1 0) 
    (0 0 1) );

blocks
( tet (0 1 2 3) (20 20 20) simpleGrading (1 1 1) );

boundary
(   xy
    { type patch;
      faces ( (0 2 1) ); }
    yz
    { type patch;
      faces ( (0 3 2) ); }
    zx
    { type patch;
      faces ( (0 1 3) ); }
    r
    { type patch;
      faces ( (1 2 3) ); } );
This is the console result:

Code:
/*---------------------------------------------------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  2.2.x                                 |
|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
Build  : 2.2.x-da11a20a3bfb
Exec   : blockMesh
Date   : Oct 14 2013
Time   : 11:43:13
Host   : "raaf"
PID    : 7621
Case   : [SNIP]/OpenFOAM/OpenFOAM-2.2.x/tutorials/electromagnetics/electrostaticFoam/test_01
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

Creating block mesh from
    "[SNIP]/OpenFOAM/OpenFOAM-2.2.x/tutorials/electromagnetics/electrostaticFoam/test_01/constant/polyMesh/blockMeshDict"
No non-linear edges defined
Creating topology blocks
Creating topology patches

Creating block mesh topology

Check topology

	Basic statistics
		Number of internal faces : 0
		Number of boundary faces : 4
		Number of defined boundary faces : 4
		Number of undefined boundary faces : 0
	Checking patch -> block consistency

Creating block offsets
Creating merge list Segmentation fault: 11
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Old   October 17, 2013, 15:50
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Bruno Santos
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wyldckat is just really nicewyldckat is just really nicewyldckat is just really nicewyldckat is just really nice
Greetings devlaam and welcome to the forum!AFAIK, in the official OpenFOAM version, blockMesh can only handle "hex" blocks.
For getting tet-like blocks, you need to collapse edges, as explained near the end of this page: http://www.openfoam.org/docs/user/blockMesh.php

Best regards,
Bruno
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Old   October 17, 2013, 16:29
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Ruud Vlaming
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Thank you wyldckat, for taking the time to answer my question.

Yes, i found that out in the mean time. I was put in the wrong direction because blockMesh does not reject the input but starts processing. I assumed, like happens when you put invalid keywords in dictionaries in general it would report that, and not generate a segmentation fault. Pretty drastic response to my taste!
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