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Re: [Question #691548]: periodic boundary in axial direction for particles in cylinder pipe

To: yade-users@xxxxxxxxxxxxxxxxxxx
From: Jan Stránský <question691548@xxxxxxxxxxxxxxxxxxxxx>
Date: Mon, 29 Jun 2020 12:35:42 -0000
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Question #691548 on Yade changed:
https://answers.launchpad.net/yade/+question/691548

    Status: Open => Answered

Jan Stránský proposed the following answer:
The split in 4 pieces is perfectly OK because for the visualization purposes, the true position is wrapped into the periodic cell. If you have cylinder around point (0,0,0), its negative coordinates are displayed in corresponding "image" corners.
It has no effect on the simulation, which (being periodic) still simulates the cylinder as a compact cylinder.

If you don't like it, shift the simulation by half size of the periodic
cell (to have the cylinder "in the middle") or switch to another
visualization tool.

Just to make it clear, splitting in 4 pieces or shifting the simulation
has no effect on the simulation, it is just visualization and its
adjustment.

cheers
Jan

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