Hello,

I'm trying to get an understanding on how to handle properly a collision sdf vdb with flip simulations. (See the video and hip.)

In the video I demonstrate two subject matter.

1. I wonder why do the particles go crazy if I turn on Fill Interior for the collision vdb?
2. Should I prevent the collision vdb to go outside the Boundary Layer in general?

(the guided ocean layer setup was set by the shelf tool)

Best wishes,
Attila Sipos