[Felima]

Dear all,

I am currently working on making simulations around an Ellipse.
I have come to notice that there is one cell that is not looking like the others (see attached file).
It looks like it does not exist and it "flickers" when the camera view angle is turned.
The goal is of course to make this cell appear as all adjacent cells.

If you require any further details please do not hesitate to contact me!

(the code below shows the blockMeshDict used.
Please note that the number of interpolation points in the splines have been reduced
by a factor of 10 to reduce the length of the code showcased here.
Therefore, should you try to open the blockMeshDict file yourself,
it will not look very pretty... but the problem is still present)

/*--------------------------------*- C++ -*----------------------------------*\\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Website:  https://openfoam.org                  |
|   \\  /    A nd           | Version:  7.0                                   |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     7.0;
    format      ascii;
    class       dictionary;
    object      blockMeshDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

convertToMeters 0.01;


vertices
(
    (-1.414214e+00 1.414214e+00 -5.000000e-01) // 0
    (7.071068e-01 7.071068e-01 -5.000000e-01) // 1
    (1.414214e+00 -1.414214e+00 -5.000000e-01) // 2
    (-7.071068e-01 -7.071068e-01 -5.000000e-01) // 3
    (-5.656854e+00 5.656854e+00 -5.000000e-01) // 4
    (2.828427e+00 2.828427e+00 -5.000000e-01) // 5
    (5.656854e+00 -5.656854e+00 -5.000000e-01) // 6
    (-2.828427e+00 -2.828427e+00 -5.000000e-01) // 7
    (-1.131371e+01 1.131371e+01 -5.000000e-01) // 8
    (1.131371e+01 1.131371e+01 -5.000000e-01) // 9
    (1.131371e+01 -1.131371e+01 -5.000000e-01) // 10
    (-1.131371e+01 -1.131371e+01 -5.000000e-01) // 11
    (-4.000000e+01 4.000000e+01 -5.000000e-01) // 12
    (4.000000e+01 4.000000e+01 -5.000000e-01) // 13
    (4.000000e+01 -4.000000e+01 -5.000000e-01) // 14
    (-4.000000e+01 -4.000000e+01 -5.000000e-01) // 15
    (-1.414214e+00 1.414214e+00 5.000000e-01) // 16
    (7.071068e-01 7.071068e-01 5.000000e-01) // 17
    (1.414214e+00 -1.414214e+00 5.000000e-01) // 18
    (-7.071068e-01 -7.071068e-01 5.000000e-01) // 19
    (-5.656854e+00 5.656854e+00 5.000000e-01) // 20
    (2.828427e+00 2.828427e+00 5.000000e-01) // 21
    (5.656854e+00 -5.656854e+00 5.000000e-01) // 22
    (-2.828427e+00 -2.828427e+00 5.000000e-01) // 23
    (-1.131371e+01 1.131371e+01 5.000000e-01) // 24
    (1.131371e+01 1.131371e+01 5.000000e-01) // 25
    (1.131371e+01 -1.131371e+01 5.000000e-01) // 26
    (-1.131371e+01 -1.131371e+01 5.000000e-01) // 27
    (-4.000000e+01 4.000000e+01 5.000000e-01) // 28
    (4.000000e+01 4.000000e+01 5.000000e-01) // 29
    (4.000000e+01 -4.000000e+01 5.000000e-01) // 30
    (-4.000000e+01 -4.000000e+01 5.000000e-01) // 31
);

blocks
(
hex (0 1 5 4 16 17 21 20) (30 30 1) simpleGrading (1 10 1)
hex (1 2 6 5 17 18 22 21) (30 30 1) simpleGrading (1 10 1)
hex (2 3 7 6 18 19 23 22) (30 30 1) simpleGrading (1 10 1)
hex (3 0 4 7 19 16 20 23) (30 30 1) simpleGrading (1 10 1)
hex (4 5 9 8 20 21 25 24) (30 30 1) simpleGrading (1 5 1)
hex (5 6 10 9 21 22 26 25) (30 30 1) simpleGrading (1 5 1)
hex (6 7 11 10 22 23 27 26) (30 30 1) simpleGrading (1 5 1)
hex (7 4 8 11 23 20 24 27) (30 30 1) simpleGrading (1 5 1)
hex (8 9 13 12 24 25 29 28) (30 15 1) simpleGrading (1 10 1)
hex (9 10 14 13 25 26 30 29) (30 15 1) simpleGrading (1 10 1)
hex (10 11 15 14 26 27 31 30) (30 15 1) simpleGrading (1 10 1)
hex (11 8 12 15 27 24 28 31) (30 15 1) simpleGrading (1 10 1)
);

edges
(
spline 0 1
(
    (-1.13465754511 1.56172213102 -0.5)
    (-0.800527338599 1.57112336468 -0.5)
    (-0.485825016826 1.49521565623 -0.5)
    (-0.219241592473 1.38423693656 -0.5)
    (7.74534642908e-17 1.26491106407 -0.5)
    (0.181743171901 1.14748122687 -0.5)
    (0.336082764952 1.03435639282 -0.5)
    (0.471176428351 0.924735808228 -0.5)
)
spline 1 2
(
    (0.816545051357 0.593254705843 -0.5)
    (0.924735808228 0.471176428351 -0.5)
    (1.03435639282 0.336082764952 -0.5)
    (1.14748122687 0.181743171901 -0.5)
    (1.26491106407 0.0 -0.5)
    (1.38423693656 -0.219241592473 -0.5)
    (1.49521565623 -0.485825016826 -0.5)
    (1.57112336468 -0.800527338599 -0.5)
)
spline 2 3
(
    (1.13465754511 -1.56172213102 -0.5)
    (0.800527338599 -1.57112336468 -0.5)
    (0.485825016826 -1.49521565623 -0.5)
    (0.219241592473 -1.38423693656 -0.5)
    (7.74534642908e-17 -1.26491106407 -0.5)
    (-0.181743171901 -1.14748122687 -0.5)
    (-0.336082764952 -1.03435639282 -0.5)
    (-0.471176428351 -0.924735808228 -0.5)
)
spline 3 0
(
    (-0.816545051357 -0.593254705843 -0.5)
    (-0.924735808228 -0.471176428351 -0.5)
    (-1.03435639282 -0.336082764952 -0.5)
    (-1.14748122687 -0.181743171901 -0.5)
    (-1.26491106407 -1.54906928582e-16 -0.5)
    (-1.38423693656 0.219241592473 -0.5)
    (-1.49521565623 0.485825016826 -0.5)
    (-1.57112336468 0.800527338599 -0.5)
)
spline 16 17
(
    (-1.13465754511 1.56172213102 0.5)
    (-0.800527338599 1.57112336468 0.5)
    (-0.485825016826 1.49521565623 0.5)
    (-0.219241592473 1.38423693656 0.5)
    (7.74534642908e-17 1.26491106407 0.5)
    (0.181743171901 1.14748122687 0.5)
    (0.336082764952 1.03435639282 0.5)
    (0.471176428351 0.924735808228 0.5)
)
spline 17 18
(
    (0.816545051357 0.593254705843 0.5)
    (0.924735808228 0.471176428351 0.5)
    (1.03435639282 0.336082764952 0.5)
    (1.14748122687 0.181743171901 0.5)
    (1.26491106407 0.0 0.5)
    (1.38423693656 -0.219241592473 0.5)
    (1.49521565623 -0.485825016826 0.5)
    (1.57112336468 -0.800527338599 0.5)
)
spline 18 19
(
    (1.13465754511 -1.56172213102 0.5)
    (0.800527338599 -1.57112336468 0.5)
    (0.485825016826 -1.49521565623 0.5)
    (0.219241592473 -1.38423693656 0.5)
    (7.74534642908e-17 -1.26491106407 0.5)
    (-0.181743171901 -1.14748122687 0.5)
    (-0.336082764952 -1.03435639282 0.5)
    (-0.471176428351 -0.924735808228 0.5)
)
spline 19 16
(
    (-0.816545051357 -0.593254705843 0.5)
    (-0.924735808228 -0.471176428351 0.5)
    (-1.03435639282 -0.336082764952 0.5)
    (-1.14748122687 -0.181743171901 0.5)
    (-1.26491106407 -1.54906928582e-16 0.5)
    (-1.38423693656 0.219241592473 0.5)
    (-1.49521565623 0.485825016826 0.5)
    (-1.57112336468 0.800527338599 0.5)
)
spline 4 5
(
    (-4.53863018045 6.24688852408 -0.5)
    (-3.2021093544 6.28449345872 -0.5)
    (-1.9433000673 5.98086262493 -0.5)
    (-0.876966369892 5.53694774622 -0.5)
    (3.09813857163e-16 5.05964425627 -0.5)
    (0.726972687604 4.58992490749 -0.5)
    (1.34433105981 4.13742557128 -0.5)
    (1.8847057134 3.69894323291 -0.5)
)
spline 5 6
(
    (3.26618020543 2.37301882337 -0.5)
    (3.69894323291 1.8847057134 -0.5)
    (4.13742557128 1.34433105981 -0.5)
    (4.58992490749 0.726972687604 -0.5)
    (5.05964425627 0.0 -0.5)
    (5.53694774622 -0.876966369892 -0.5)
    (5.98086262493 -1.9433000673 -0.5)
    (6.28449345872 -3.2021093544 -0.5)
)
spline 6 7
(
    (4.53863018045 -6.24688852408 -0.5)
    (3.2021093544 -6.28449345872 -0.5)
    (1.9433000673 -5.98086262493 -0.5)
    (0.876966369892 -5.53694774622 -0.5)
    (3.09813857163e-16 -5.05964425627 -0.5)
    (-0.726972687604 -4.58992490749 -0.5)
    (-1.34433105981 -4.13742557128 -0.5)
    (-1.8847057134 -3.69894323291 -0.5)
)
spline 7 4
(
    (-3.26618020543 -2.37301882337 -0.5)
    (-3.69894323291 -1.8847057134 -0.5)
    (-4.13742557128 -1.34433105981 -0.5)
    (-4.58992490749 -0.726972687604 -0.5)
    (-5.05964425627 -6.19627714326e-16 -0.5)
    (-5.53694774622 0.876966369892 -0.5)
    (-5.98086262493 1.9433000673 -0.5)
    (-6.28449345872 3.2021093544 -0.5)
)
spline 20 21
(
    (-4.53863018045 6.24688852408 0.5)
    (-3.2021093544 6.28449345872 0.5)
    (-1.9433000673 5.98086262493 0.5)
    (-0.876966369892 5.53694774622 0.5)
    (3.09813857163e-16 5.05964425627 0.5)
    (0.726972687604 4.58992490749 0.5)
    (1.34433105981 4.13742557128 0.5)
    (1.8847057134 3.69894323291 0.5)
)
spline 21 22
(
    (3.26618020543 2.37301882337 0.5)
    (3.69894323291 1.8847057134 0.5)
    (4.13742557128 1.34433105981 0.5)
    (4.58992490749 0.726972687604 0.5)
    (5.05964425627 0.0 0.5)
    (5.53694774622 -0.876966369892 0.5)
    (5.98086262493 -1.9433000673 0.5)
    (6.28449345872 -3.2021093544 0.5)
)
spline 22 23
(
    (4.53863018045 -6.24688852408 0.5)
    (3.2021093544 -6.28449345872 0.5)
    (1.9433000673 -5.98086262493 0.5)
    (0.876966369892 -5.53694774622 0.5)
    (3.09813857163e-16 -5.05964425627 0.5)
    (-0.726972687604 -4.58992490749 0.5)
    (-1.34433105981 -4.13742557128 0.5)
    (-1.8847057134 -3.69894323291 0.5)
)
spline 23 20
(
    (-3.26618020543 -2.37301882337 0.5)
    (-3.69894323291 -1.8847057134 0.5)
    (-4.13742557128 -1.34433105981 0.5)
    (-4.58992490749 -0.726972687604 0.5)
    (-5.05964425627 -6.19627714326e-16 0.5)
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    (-5.98086262493 1.9433000673 0.5)
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)
arc 8 9
    (9.79717439318e-16 16.0 -0.5)
arc 9 10
    (16.0 0.0 -0.5)
arc 10 11
    (9.79717439318e-16 -16.0 -0.5)
arc 11 8
    (-16.0 -1.95943487864e-15 -0.5)
arc 24 25
    (9.79717439318e-16 16.0 0.5)
arc 25 26
    (16.0 0.0 0.5)
arc 26 27
    (9.79717439318e-16 -16.0 0.5)
arc 27 24
    (-16.0 -1.95943487864e-15 0.5)
);

boundary
(
Top
{
type patch;
faces
(
    (13 12 28 29)
);
}
Right
{
type patch;
faces
(
    (14 13 29 30)
);
}
Bottom
{
type patch;
faces
(
    (15 14 30 31)
);
}
Left
{
type patch;
faces
(
    (12 15 31 28)
);
}
ellipse
{
type wall;
faces
(
    (1 0 16 17)
    (2 1 17 18)
    (3 2 18 19)
    (0 3 19 16)
);
}
);

mergePatchPairs
(
);