Is it possible to simulate large scale fluid without fluid physics?

I have a large scale scene where water flow will be simulated in tiny spaces inside the large scene. I once saw this YouTube comment where someone asked how to simulate fluid in large scene - like a bath tub with a lot of details. But then the Youtuber replied that he would use particle system for the same and not fluid simulation.

Unfortunately, I can’t recall the video or the youtuber who had commented.

If fluid with details is possible without fluid physics with particle system, can someone please tell me how?

My requirement when it comes to fluid with details is - thin fluid that is bouncy, light and has tiny droplets and splashes.

I’m using particle system with metaballs as instance which sort of gives the liquid effect but it’s either too blobby or boxy or both. Pictures below:


Mix of blobby & boxy.

Boxy (the shapes are sharp instead of soft/round)

Kind of blobby.

Any ideas? Or is this the best that can be done with particle systems?

In the Particle System > Physics change Newtonian to fluid.
Read the Manual… :wink:

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