How to do vortex rotation in my case


Hello Guys!
I’m using Particle Flow system to make objects fall into a container-like shape (collider). This works fine,
but afterwards, i need the objects to start swirling or rotating within the container in a clockwise direction. Can you suggest how i can make them swirl or rotate? i’m just a beginner so i would appreciate any help you can share. Thank you.

Here the screen