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- - checkMesh (https://www.cfd-online.com/Forums/openfoam/84703-checkmesh.html)

hi dear foamer
i made an axisymmetric mesh but when i run the checkMesh, i get following warning? whats wrong?

Number of edges not aligned with or perpendicular to non-empty directions

what should i do to remove this warning?
mesh and error log are attached

thanks in advance

Hello,

checkMesh reports "Mesh OK" if you change this:

wedge back
(
(0 4 5 3)
)

The reason is that your front and back wedges must be oriented in the same way.

i've changed it, but the problem is still there!, any other suggestion ?

Just to make sure you are doing the same thing as me, here is the blockMeshDict that works for me.

thank you flowris
i copied exactly what you did, but problem is still there! checkMesh show me that previous error again!
could u tell which version of openFoam do u use? i try it with openFoam 1.6 and 1.6.x and get the same error result

Try to figure out where in your geometry the error is. You can do it by:

foamToVTK -nonAlignedEdges -time 0

Open the VTK file and let display at which age the error is. Hopefully, that will help.

thats the complete command
foamToVTK -pointSet nonAlignedEdges -time 0

but i can not see any thing more than my model geometry in paraview, my steps in paraview is like below
- paraview
-open blabla.vtk
- open nonAlignedEdges.vtk
anything else?

When you have loaded it, you must use Glyth to visualize it. Just click on it and see what happens; lets play a little around. I'd like to give you detailed advice, but I haven't used it for a while.

Cheers

I wouldn't know what the problem is. I use 1.5-dev, but I don't think this should make a difference for the command blockMesh.
Maybe there is something wrong in one of the other files. Please find my complete case, go in the folder case and run blockMesh and checkMesh.

i've done it with ur case flowris but there is the previous warning!

I don't know what the problem is. This is my output for checkMesh:

Code:

Create time



Create polyMesh for time = constant



Time = constant



Mesh stats

    points:           3321

    internal points:  0

    faces:            6420

    internal faces:   3100

    cells:            1600

    boundary patches: 5

    point zones:      0

    face zones:       0

    cell zones:       0



Number of cells of each type: 

    hexahedra:     1520

    prisms:        80

    wedges:        0

    pyramids:      0

    tet wedges:    0

    tetrahedra:    0

    polyhedra:     0



Checking topology...

    Boundary definition OK.

    Point usage OK.

    Upper triangular ordering OK.

    Face vertices OK.

    Number of regions: 1 (OK).



Checking patch topology for multiply connected surfaces ...

    Patch               Faces    Points   Surface topology                  

    front               1600     1701     ok (non-closed singly connected)  

    back                1600     1701     ok (non-closed singly connected)  

    fixedWall           80       162      ok (non-closed singly connected)  

    inletOutlet         40       82       ok (non-closed singly connected)  

    axis                0        0        ok (empty)                        



Checking geometry...

    This is a 3-D mesh

    Overall domain bounding box (0 -4.362e-07 0) (9.99e-06 4.362e-07 4e-05)

    Mesh (non-empty) directions (1 1 1)

    Mesh (non-empty, non-wedge) dimensions 2

    Boundary openness (-2.23938e-15 -6.24226e-17 9.57586e-19) Threshold = 1e-06 OK.

    Max cell openness = 1.65347e-16 OK.

    Max aspect ratio = 22.9253 OK.

    Minumum face area = 1.08941e-14. Maximum face area = 4.362e-13.  Face area magnitudes OK.

    Min volume = 5.44705e-21. Max volume = 2.12435e-19.  Total volume = 1.74306e-16.  Cell volumes OK.

    Mesh non-orthogonality Max: 0 average: 0 Threshold = 70

    Non-orthogonality check OK.

    Face pyramids OK.

    Max skewness = 2.49999 OK.



Mesh OK.



End

i guess there is different approach to check mesh in openFOAM 1.5-dev and openFOAM 1.6-x , so it can remain another unsolvable problem ;)