CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > OpenFOAM Native Meshers: blockMesh

circular plate mesh with cyclic

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Display Modes
Old   November 6, 2015, 06:05
Default circular plate mesh with cyclic
  #1
New Member
 
Dani
Join Date: Nov 2015
Posts: 1
Rep Power: 0
blackbow is on a distinguished road
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.


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
blackbow is offline   Reply With Quote

Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
3D Hybrid Mesh Errors DarrenC ANSYS Meshing & Geometry 11 August 5, 2013 06:42
Add Mesh Layers doesnt work on the whole surface Kryo OpenFOAM Native Meshers: snappyHexMesh and Others 8 September 13, 2012 09:28
icem fluent mesh with cyclic boundary condition jiejie OpenFOAM Other Meshers: ICEM, Star, Ansys, Pointwise, GridPro, Ansa, ... 1 April 5, 2011 03:36
Icemcfd 11: Loss of mesh from surface mesh option? Joe CFX 2 March 26, 2007 18:10
How to control Minximum mesh space? hung FLUENT 7 April 18, 2005 09:38


All times are GMT -4. The time now is 08:54.