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Problem with cyclic boundary conditions in parallel

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Old   March 4, 2014, 09:36
Default Problem with cyclic boundary conditions in parallel
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ttttoor
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Hi, all
I am simulating a fluid flow in a periodic cylinder pipe using OpenFOAM.

The 0/U and 0/p files are set as following:

0/U
inlet
{
type cyclic;
value uniform (0 0 0);
}
outlet
{
type cyclic;
value uniform (0 0 0);
}
wall
{
type fixedValue;
value uniform (0 0 0);
}

0/p
inlet
{
type fan;
patchType cyclic;
f List 1 (-0.0128);
value uniform 0;
}
outlet
{
type fan;
patchType cyclic;
f List 1 (-0.0128);
value uniform 0;
}
wall
{
type zeroGradient;
}

It works well.
But when I run the simulation in parallel, the pressure field and the velocity field become zero in the first time step.

Do you have any idea for the reason? Thanks in advance.
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Old   March 4, 2014, 11:26
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Christian
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are you running the cyclic-patches on the same processor?i think you can fix the by editing the decomposition-file.

for example:

method simple;

preservePatches
(
LEFT
RIGHT
);
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Old   March 6, 2014, 04:04
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Quote:
Originally Posted by ChristianR1988 View Post
are you running the cyclic-patches on the same processor?i think you can fix the by editing the decomposition-file.

for example:

method simple;

preservePatches
(
LEFT
RIGHT
);
Hello, Christian
It works. Thank you very much.
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