Nima Ghorab

tamte

deremis
While the FLIP fluid is colliding with the RBD objects, the RBD objects themselves aren't moving.
Could someone kindly take a moment to review this setup?

1. your fluid resolution is low relatively to the sizes of the rbd pieces
look at the Collision guide in your flipobject1
so
- set it to at least to 0.01 which would make the grid res 0.02 which would start making some effect
- or use separate collision separation that will capture the resolution of your pieces
- or make your pieces larger

2. your fluid density is 1 while rbd 1000, so the fluid has barely any effect
set your fluid density to default 1000 and rbd can stay or can be more or less depending on if you want it to float or sink

Dear Tomas, I have a question. If we use the old RBD Sim for interaction with FLIP, how can we control RBDs like we do with the Geometry Wrangles beside the RBD packed objects?

You can add a PolyFrame node and set the Bitangent parameter to N before your Peak node.
It creates the desired normal vector for your helix.

Thanks a lot, dear Animatrix.