| anhkenyt |
May 18, 2020 03:19 |
Periodic Boundary Condition For The Edges of Parallelogram
1 Attachment(s)
hi foamer,
I want to define 4 cyclics boundary for 4 edges of the parallelog channel. But I have a problem with 2 edges which were tilted against the axis (look at the picture below).
I was used gmsh to meshing and used createPatchDict to create cyclic boundary.
Code:
/*--------------------------------*- C++ -*----------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Version: 6
\\/ M anipulation |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
object createPatchDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
// Do a synchronisation of coupled points after creation of any patches.
// Note: this does not work with points that are on multiple coupled patches
// with transformations (i.e. cyclics).
pointSync false;
// Optional: Write cyclic matches into .obj format; defaults to false.
writeCyclicMatch false;
// Patches to create.
patches
(
{
//- Master side patch
name in_1;
patchInfo
{
type cyclic;
matchTolerance 0.0001;
neighbourPatch out_1;
transform translational;
separationVector (8e-6 0 0) ;
}
constructFrom patches;
patches (in1);
}
{
//- Slave side patch
name out_1;
patchInfo
{
type cyclic;
matchTolerance 0.0001;
neighbourPatch in_1;
transform translational;
separationVector (-8e-6 0 0);
}
constructFrom patches;
patches (out1);
}
{
//- Master side patch
name in_2;
patchInfo
{
type cyclic;
// inGroups 1(cyclicAMI);
matchTolerance 0.0001;
neighbourPatch out_2;
transform translational;
separationVector (0 -8e-6 0 ) ;
}
constructFrom patches;
patches (in2);
}
{
//- Slave side patch
name out_2;
patchInfo
{
type cyclic;
// inGroups 1(cyclicAMI);
matchTolerance 0.0001;
neighbourPatch in_2;
transform translational;
separationVector (0 8e-6 0 );
}
constructFrom patches;
patches (out2);
}
);
I face a problem :"face 0 area does not match neighbour by 22.2222% -- possible face ordering problem.
patch:in_2 my area:1e-13 neighbour area:8e-14 matching tolerance:0.0001
"
I was tried cyclicAMI but it is not fit in my solver which I was developed.
Any one help me to create cyclic boundary for these edge.
Thank you so much, https://drive.google.com/open?id=15D...KKszyYE6sCUSqg |
