Periodic boundaries for axial symmetric system

PFC
1

Hey everyone,

as part of my studies I simulate pile penetration into the soil with different pile installation methods using PFC3D. Because the system is axialsymmetrical, I want to model the system as a 30°-“cake piece” to save computional cost.
How can I install periodic boundaries on the sides of the “cake piece”, so the ball that leave the “cake piece” on the one side enter it on the other side?

Thank you in advance

Best,
Nick

2

Dear Nick,
please have a look at the domain condition commands:

domain.condition command — PFC 7.0 documentation (itascacg.com)

I hope that this helps you!

Regards,
Nils

3

Hello Nils,

thank you for the reply. Maybe I phrased the question in a false manner.
I have an axialsymmetrical system and thus want to model the system with 30°-"cake-pieces and periodic boundaries on the sides of the “cake piece”. How can I put that into practice? (Problem: model domain in PFC3D is by default cubic)

Best,
Nick

4

Hi Nick,

I think this is not doable with the current options in pfc domain.

Karam

5

Dear Nick,
unfortunately Karam is correct. However, if you do require these periodic boundaries you could maybe implement these using walls and some clever fish function.

Regards,
Nils

1 Like
6

Thanks for your responses Karam and Nils.

I got this idea from the study of a fellow colleague who also used PFC (maybe not PFC 7.0). So I know it must be possible. However, I am not able to get in touch with him.

Best,
Nick