Hi,
I want to use periodic boundaries in order to minimize simulation time. But I don't know how to get things done correctly.
I import a rectangular STL mesh (walls) with only 4 walls which should rotate during the simulation. The two missing walls should be represented by periodic boundaries. But when I move the mesh it moves out of my simulation box (--> error) and periodic boundaries are only available for fixed faces. Is there any possibility to realize such a case? And did I understand correctly that I can use periodic boundaries only for the simulation box and not for defined regions inside the simulation box? And for that reason cylindrical boundaries are not possible?
I've made a sketch to clarify my setup.
Regards,
Jan
| Attachment | Size |
|---|---|
 setup.png | 19.51 KB |
ckloss | Thu, 10/03/2013 - 16:37
Hi Jan,
Hi Jan,
I'm not sure if I got your setup right, but you cannot rotate a periodic face, only rotations with an axis perpendicular to periodic faces are possible.
Maybe you can add the forces caused by rotation with a fix addforce-like command instead of actually simulating the rotation?
Best
Christoph