Help I want to float an object

[moyashiking]

The fluid blueprint has a buoyancy setting, but that's the buoyancy of the fluid vs the athmosphere. That will control how much the fluid floats in the air surrounding it, and allows you to simulate gases.

What you want to control if the buoyancy of rigidbodies vs the fluid. This depends on the mass of the fluid vs the mass of the rigidbody, or more accurately, their mass/volume ratios: their density.


Resolution only has a secondary effect on buoyancy, because it is harder for a rigidbody to move among larger particles (lower resolution) compared to small particles (higher resolution). This is a purely mechanical effect.


Denser objects will sink, less dense objects will rise. So if your rigidbody is heavier than the fluid particles, it will tend to sink.

I apologize for the inconvenience many times.
It turns out that density is an important factor.

As I wrote before, I don't know how to compare densities.
What is the density of Sphere and Cube (2)?

> Looking at the Sphere and Cube Mass, it's heavier than the Bluprint Mass.
> Isn't these just values to compare?
> Please tell me the correct interpretation method.
>
> Dense 2 (BlueWater)
>    Rest Density 1000
>    Particle mass (kg):
>    2D:10
>    3D;1
>
> Light 2 (PinkWater)
>    Rest Density 300
>    Particle mass (kg):
>    2D:3
>    3D;0.3
>
> Sphere
>    Mass 50
>
> Cube (2)
>    Mass 20