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"Fluid simulation" was a bit of a nonsense response to that question, but there are similarities between metaballs and fluid simulations. The kernel functions used to interpolate Smoothed Particle Hydrodynamics samples are basically the same thing as metaball functions. The main difference is that you probably don't need the isosurface during simulation.

On a related note, one of the annoying things about metaballs for fluid surfacing is that there's some spooky action at a distance. Two drops of water will reach out towards each other as they come closer together, which makes no physical sense at all.




Totally right. I meant to say "fluid dynamics," as in, approximating Jacobians, etc.




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