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This question is related to Physics cross-simulation interactions?.


Is it possible to make an object float/interact with a fluid simulation?

It doesn't have to be full two way interaction, but I want to know if it is at least possible to affect anything (particles, rigid bodies, etc.) with fluid.

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In short, no. But...

This part of the wiki talks a little about setting an object as an inlet, outlet, obstacle, or fluid control. There are also settings in the fluid sim that tries to imitate foam floating on the surface of the fluid, but there's not a way to make an object float, per se. Nor will the fluid sim interact with a rigid body.

That being said, it's possible to export a fluid sim to a mesh, in which case it will have the same attributes as any other mesh. Not quite interaction, but close.

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  • $\begingroup$ It's been more than 4 years since you answered this. Is it still not possible to float an object in a fluid in Blender? $\endgroup$ – Amir Jun 26 '18 at 1:13

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