Niagara Fluids - is mixing not possible? any alternatives?

I have looked everywhere online for an up to date answer on if and how I can get two fluids to mix using Niagara.

I am doing a dissertation project and it was proposed with the idea that two fluids can interact within UE5, I am trying to track the spread and distribution of one liquid into another.

A last resort idea would be to generate small particles that can float in the liquid that spread out, but there is also no clear way on how buoyancy should be achieved in Niagara.

Any help or advice would be appreciated!