[Carmelo55]

I am trying to do a simple cylinder with the function arc but i don´t understand why it does not work.

error Foam
"
Create time

Creating block mesh from
"C:/OpenFOAM/18.06/Carmelo-dev/run/cavity/system/blockMeshDict"
Creating block edges


--> FOAM FATAL ERROR:
0

From function Foam::cylindricalCS Foam::blockEdges::arcEdge::calcAngle()
in file blockEdges/arcEdge/arcEdge.C at line 58.

FOAM aborting "

This is the code.

"
convertToMeters 0.1;

vertices
(
(0 0 0)
(1 0 0)
(1 1 0)
(0 1 0)
(0 0 0.1)
(1 0 0.1)
(1 1 0.1)
(0 1 0.1)
);

blocks
(
hex (0 1 2 3 4 5 6 7) (20 20 1) simpleGrading (1 1 1)
);

edges
( arc 0 1 (0.5 0 0)

);

boundary
(
movingWall
{
type wall;
faces
(
(3 7 6 2)
);
}
fixedWalls
{
type wall;
faces
(
(0 4 7 3)
(2 6 5 1)
(1 5 4 0)
);
}
frontAndBack
{
type empty;
faces
(
(0 3 2 1)
(4 5 6 7)
);
}
);

mergePatchPairs
(
); "


Thanks and Regards.

[simrego]

Hi!


I think because this "arc" you would like to define is a straight line. As I remember in the arc you have to define a point on the arc not the origin. If you define the origin and 2 points you still have 2 possibilities for the arc. So if I'm correct you have to define the 2 ends of the arc (this is correct in your case) and an additional point on the arc (your point will define a straight line).

[yambanshee]

as simrego said: the point specified with the arc command must be a point the arc passes through. In this case that would be (0.5 0.5 0).
Note; you also need to specify the arc between points 4 and 5 as (0.5 0.5 0.1)

[Carmelo55]

thanks all. i saw my mistake.

[HappyS5]

Originally Posted by Carmelo55

thanks all. i saw my mistake.

Please tell us your mistake.

[Antimony]

Hi,

The mistake was that all the 3 points [(0 0 0), (1 0 0) and (0.5 0 0)] all lie on the same straight line - you cannot get an arc out of them.

Instead of (0.5 0 0), it should be a point on the arc, for example (0.5 0.5 0)

Hope this helps.

Cheers,
Antimony

[HappyS5]

Hello,

For me, the error happened because my pointField.H programming was wrong, and my generated points were wrong.