# Rotational periodicity

**URL:** <https://community.freefem.org/t/rotational-periodicity/2352>\
**Category:** General Discussion\
**Created:** [March 22, 2023, 2:03pm UTC](https://community.freefem.org/t/rotational-periodicity/2352 "2023-03-22T14:03:27Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Markov](https://avatars.discourse-cdn.com/v4/letter/m/f1d935/32.png) [@Markov](https://community.freefem.org/u/Markov)\
**Post date:** [March 22, 2023, 2:03pm UTC](https://community.freefem.org/t/rotational-periodicity/2352/1 "2023-03-22T14:03:27Z")

</div>

Hello,

I was wondering if there is a way to enforce a rotational periodic boundary condition to two patches.

Thank you