[doctorWho]

Hi,

I am trying to simulate flow around a circular cylinder.
To mimic infinitely long span, I want to use periodic BC on the two sides spanwise (span length is 8 and origin is located in the center of the cylinder).

mesh was made by cfMesh so cyclicAMI instead of cyclic type is used.
boundary patches are as follows:
inlet (in flow direction, -x)
outlet (in flow direction, +x)
top (in cross flow direction, +y)
bottom (in cross flow direction, -y)
side1 (in spanwise, -z)
side2 (in spanwise, +z)

so in polyMesh/boundary, I applied cyclicAMI as follows:

side1
{
type cyclicAMI;
nFaces 28010;
startFace 12947067;
neighbourPatch side2;
matchTolerance 0.0001;
transform translational;
separationVector (0 0 8);
}

side2
{
type cyclicAMI;
nFaces 28010;
startFace 12975077;
neighbourPatch side1;
matchTolerance 0.0001;
transform translational;
separationVector (0 0 -8);
}

assuming laminar flow, I applied cyclicAMI to 0/U and 0/p as follows:
"side1|side2"
{
type cyclicAMI;
}

Update:
fixing typo and separationVector sign get to work.

[drinkWater]

Hi
I have got the same problem, and I haven't solve it yet.So I reply your post, and wait for the result.