14-07-2021, 09:35 AM
(This post was last modified: 14-07-2021, 09:35 AM by josemendez.)
(14-07-2021, 06:29 AM)moyashiking Wrote: I tried various things while comparing with the sample scene.
Probably the cause is not the buoyancy setting,
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.
(14-07-2021, 06:29 AM)moyashiking Wrote: but the Resolution is too small and rough, and the object is not pressed well.
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.
(14-07-2021, 06:29 AM)moyashiking Wrote: By the way, as I asked earlier, if you have any good criteria for specifying the Mass of Blueprint and the Mass of Object, please give me some advice.
Denser objects will sink, less dense objects will rise. So if your rigidbody is heavier than the fluid particles, it will tend to sink.