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Importing mesh files to OpenFOAM: is obj format viable?

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Old   March 13, 2013, 18:41
Question Importing mesh files to OpenFOAM: is obj format viable?
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Ok, so first of all I'm still a newbie in the whole CFD realm. For importing & exporting meshes into and from OpenFOAM, I have two questions:

1. Is the obj format a viable format to carry 3D mesh data?
2. If it is, then how (and I will need detailed instructions ) do I import a mesh in obj format to OF?
3. If it is only for surface meshes, could I still import it to OF, then use snappyhexmesh to do the volume meshing?

Reason I'm asking is that I can import mesh files from CCM+ (I know about the conversion tool, but that's for another thread) as wrl files that Mesh lab recognizes, and then does import it to obj.

Thanks in advance.
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Old   March 13, 2013, 21:09
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Check the motorbike tutorial ($FOAM_TUTORIALS/incompressible/simpleFoam/motorBike/ directory)

It pools the geometry from zipped .obj (motorBike.obj.gz) file in the "$FOAM_TUTORIALS/resources/geometry" directory.

After it is copied by the "Allrun" script into the trimesh directory, the snappyHexMesh calls it:

Code:
geometry
{
    motorBike.obj
    {
        type triSurfaceMesh;
        name motorBike;
    }

    refinementBox
    {
        type searchableBox;
        min (-1.0 -0.7 0.0);
        max ( 8.0  0.7 2.5);
    }
};
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Old   March 15, 2013, 10:07
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Thanks, I'll try that and report. I just want to mention that by comparing the mesh properties on the obj & wrl files with those from the original sim file, it is clear that the imported meshes on both wrl & obj files have way less elements indicating they are only surface meshes.
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Old   March 5, 2014, 06:14
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Some external tools require the STL file format. Use the OF tool surfaceConvert to convert between a variety of formats when necessary.

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