Hi All,

I am trying to make each letter in my font start off laying on the floor and then a flip tank fills up and the letters float on the surface of the fluid.

I just can't figure it out. In my current setup the letters just bounce off the fluid as if it were solid rock.

Does anyone have any tips on achieving this effect?

A few things:
1. Need to enable Volume Based Collisions on the RBD Solver. Found on the RBD Solver Tab. Also increase the collision volume resolution while displaying collision volumes (toggle) and disable geometry display as it gets in the way.

2. Increase the resolution of your simulation(0.025 as a start) and/or enable Collision Separation and set to 0.0125. Verify proper colliders by turning on the visualization data “Collision” on the FLIP Object DOP.

3. Increase the thickness of your fluid. It's too thin. Thinner than the letters. The letters need to push against fluid.

See the attached example file.

Thanks for the tips and the working file. I now see how useful the visualizers are for dialing in the resolution on collision.

About point #3:It's too thin.

Part of the concept is that the letters are laying on the ground then water comes up from below and lifts them up. At some point the flip tank needs to be 0 and then fill up.

How do I achieve that effect and still keep the letters floating?

Try it with an RBD ground plane under the thin fluid.

I would imagine the letters would either rattle off the ground or impact with the fluid around them.

Run the FLIP sim with as high a resolution as you can as well.