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Difference in the number of cells between ParaView and checkMesh

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Old   July 15, 2015, 07:39
Default Difference in the number of cells between ParaView and checkMesh
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Hello everyone,

I'm comparing the efficiency of different snappyHexMesh meshes and to do so I'm paying attention to the number of cells of the mesh. And I made the weird discovery that checkMesh and ParaView don't agree on the number of cells of the mesh!

For example, for the same mesh, the Statistics inspector of ParaView gives 3.995.096 cells:

While the checkMesh result gives 1.105.136 cells:

Create time

Create polyMesh for time = 0

Time = 0

Mesh stats
    points:           1593493
    faces:            3707462
    internal faces:   3262532
    cells:            1105136
    faces per cell:   6.3069106
    boundary patches: 3
    point zones:      0
    face zones:       0
    cell zones:       0
Which one should I trust?

And any explanations for this huge difference? I have compared several meshes and the ratio is typically around 4 in favor of ParaView everytime.

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