| blackbow |
November 6, 2015 05:05 |
circular plate mesh with cyclic
Hi!
I'm trying to create a Mesh for a circular plate. The goal is to simulate the distribution of a fluid which enters the plate from a hole in the middle.
I have some problems with the cyclic boundary condition! The Mesh itself doesn't look so wrong. It should be 90 degree of a full circle.
http://i63.tinypic.com/2yla2hu.png
But if i do a checkMesh, i get the following 2 errors:
Code:
Mesh non-orthogonality Max: 179.858 average: 14.9863
***Number of non-orthogonality errors: 4000.
**Error in coupled point location: 2000 faces have their 0th or consecutive vertex not opposite their coupled equivalent. Average mismatch 0.
<<Writing 2000 faces with incorrectly matched 0th (or consecutive) vertex to set coupledFaces
Failed 2 mesh checks.
Here's the content of my blockMesh File:
Code:
vertices
(
(0 -0.1 0) //0
(0.5 -0.6 0) //1
(0 0.1 0) //2
(0.5 0.6 0) //3
(0 -0.1 0.01) //4
(0.5 -0.6 0.01) //5
(0 0.1 0.01) //6
(0.5 0.6 0.01) //7
);
blocks
(
hex (0 1 3 2 4 5 7 6) (100 20 20) simpleGrading (1 2 1)
);
edges
(
arc 0 2 (0.041421 0 0)
arc 4 6 (0.041421 0 0.01)
arc 1 3 (0.748528 0 0)
arc 5 7 (0.748528 0 0.01)
);
boundary
(
top
{
type wall;
faces
(
(4 5 7 6)
);
}
bottom
{
type wall;
faces
(
(0 1 3 2)
);
}
inlet
{
type patch;
faces
(
(0 4 6 2)
);
}
outlet
{
type patch;
faces
(
(1 5 7 3)
);
}
patch0_half0
{
type cyclic;
neighbourPatch patch0_half1;
rotationAxis (0 0 1);
rotationCentre (-0.1 0 0);
faces
(
(2 3 7 6)
);
}
patch0_half1
{
type cyclic;
neighbourPatch patch0_half0;
rotationAxis (0 0 1);
rotationCentre (-0.1 0 0);
faces
(
(0 1 5 4)
);
}
);
mergePatchPairs
(
);
Did i understand it right, that the "rotationAxis" value is the direction of the axis, and the "rotationCentre" value the position of it?
I already tried to change the axe positions, but i get the same error. Probably it's a easy fault, like a syntax problem, but i can't find it. Can anybody help me?
Thank you!
Dani |
