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parallel error with cyclic BCs for pimpleDyMFoam and trouble in resuming running

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Old   November 21, 2013, 15:08
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Originally Posted by levka View Post
hi guys,
i am trying to apply cyclic BC to the domain with mesh motion and can not succeed.
Mesh solver (Laplaciancomponent or Displacement) works wonderful with the same domain but when inlet and outlet are some fixed values or zero gradients. But when i change them to cyclic with help of CreatePatch utility mesh solver starts working not corrected. I explain correct - when only object inside domain moves; non correct - when whole domain moves...

Maybe i need to use cyclicAMI?
but nothing in my domain is rotating...

Any hit is much appreciated
ok... hi...

first when u use the tool meshes from OF u have to understand the software's bcs

first, you use cyclicami for actual mesh motion (different from mrf)
second, cycliami is an internal BCs, so its not an inlet or outlet

second, if your case is symmetric for a phi angle, then u use cyclic bcs if im not mistaken

third, make sure the bcs ur using are compatible with the current solver

fourth, symmetrical cases may be steady-state cases. cyclic ami is for transient solutions.

i advise you to read of's user guide and attempt a mesh created somewhere else.

Best Regards

"Elune will grant us the strength"
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Old   November 22, 2013, 03:38
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Greetings to all!

@Lev: If there is mesh motion, you probably will need cyclic AMI. Check post #12 for more information.

Best regards,

Last edited by wyldckat; November 22, 2013 at 03:43. Reason: Had to move around the answers to Lev...
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cyclic boundaries, parallel error, pimpledymfoam, trouble with resuming, wavedisplacement

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