[mikeP]

Hello,

I am trying to simulate a cyclic flow with a defined uniform temperature value at the inlet. The following two boundary conditions for T work in a serial case:

type inletOutlet;
patchType cyclic;
inletValue uniform 290;
value uniform 290;

and

type groovyBC;
patchType cyclic;
valueExpression "290";
value uniform 290;

However, when I try to run the case in parallel, I get the following error immediately at the start of the simulation.

FOAM FATAL IO ERROR:
inconsistent patch and patchField types for patch type cyclic and patchField type inletOutlet

Is this a bug? I know there is also the possibility of mapped boundary condition. But it is more convenient in this particular case if I can do it with cyclic.

I am using chtMultiRegionSimpleFoam as solver and OpenFOAM v2.4.

[Artur]

Hi,

This sort of problem appears if your boundary is defined in constant/polyMesh/boundary as a type cyclic and then you try to assign a non-cyclic BC to it. This causes issues because the physical definition of the boundary in the mesh files is different to what you are prescribing. Hard to say how you managed to get it to work in serial, my guess is somewhere between making the mesh and decomposing it things got twisted around. My advice is to look through the mesh files and make sure everything is consistent and the way you intended.

All the best,

A

[suman91]

Hi,

Am currently new to OpenFOAM and wanted to know how to apply cyclic boundary conditions. I am running a 3D test case in which the front and back faces I want as cyclic. In the blockMeshDict file I have mentioned type as "cyclic".

a. Where to mention the neighbor patches?
b. In which other files I need to do changes?

[saumavadey]

Hello!
I have developed a customized boundary condition "criticalDepthBC" based on fixedValueFvPatchField.

The test case that I am solving has an internal boundary. For creating the internal boundary I have used the createBaffles utility. Now, the boundary conditions implemented on the master patch have to be mapped onto the slave patch. I am using patchType: cyclic for that.

For the fields, I have prescribed zeroGradient BC with patchType cyclic expect for one where I have prescribed my customized BC "criticalDepthBC" with patchType cyclic.

After running the command createBaffles, the master and slave boundaries for all the fields with zeroGradient BC are overwritten correctly except for the customized BC "criticalDepthBC".

I don't know why is this happening.
Please help with your valuable suggestions!