[Flowkersma]

Hi everyone,

I have been testing the new multi-grading feature and found out some strange behaviour in it. BlockMesh fails sometimes if the multi-grading is specified on an edge which has opposite directions between the two blocks. I attached two examples: first one runs without problems but the second one gives an error "Inconsistent point locations between block pair 0 and 1." Only the amount of cells in k-direction is changed (i.e. 20,23 and 24 are OK and 21,22 are not). What is going on?

This one runs without problems:

vertices
(
    (-0.5 0.5 0.0)
    (0.5 -0.5 0.0)
    (0.5 0.5 0.0)
    (1.0 1.0 0.0)
    (1.0 -1.0 0.0)
    (-1.0 1.0 0.0)
    (-0.5 0.5 2.0)
    (0.5 0.5 2.0)
    (0.5 -0.5 2.0)
    (-1.0 1.0 2.0)
    (1.0 -1.0 2.0)
    (1.0 1.0 2.0)
    (-0.5 -0.5 0.0)
    (-0.5 -0.5 2.0)
);

blocks
(
    hex (5 3 11 9 0 2 7 6)  (40 40 20) edgeGrading (
1 1
(
 (0.3 0.4 4) (0.5 0.3 1) (0.2 0.3 0.25)
)
)
    hex (1 2 7 8 4 3 11 10)  (20 40 20) edgeGrading (
1 1
(
 (0.2 0.3 4) (0.50 0.3 1)  (0.30 0.4 0.25)
)
)
);

This one gives an error:

vertices
(
    (-0.5 0.5 0.0)
    (0.5 -0.5 0.0)
    (0.5 0.5 0.0)
    (1.0 1.0 0.0)
    (1.0 -1.0 0.0)
    (-1.0 1.0 0.0)
    (-0.5 0.5 2.0)
    (0.5 0.5 2.0)
    (0.5 -0.5 2.0)
    (-1.0 1.0 2.0)
    (1.0 -1.0 2.0)
    (1.0 1.0 2.0)
    (-0.5 -0.5 0.0)
    (-0.5 -0.5 2.0)
);

blocks
(
    hex (5 3 11 9 0 2 7 6)  (40 40 21) edgeGrading (
1 1
(
 (0.3 0.4 4) (0.5 0.3 1) (0.2 0.3 0.25)
)
)
    hex (1 2 7 8 4 3 11 10)  (20 40 21) edgeGrading (
1 1
(
 (0.2 0.3 4) (0.50 0.3 1)  (0.30 0.4 0.25)
)
)
);

[ssss]

I think that you should report this bug in the mantis openfoam tracker. They will surely take a look at it

[Flowkersma]

Thanks, I did a bug report. http://www.openfoam.org/mantisbt/view.php?id=1809