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Comment by micw | Hacker News Reader

Looks nice but not like water. It keeps moving forever. A bucket of water would stand still after a few minutes.

Edit: Seems to lack simulation of friction between water particles?

Funnily this is usually something you need to fix in water simulations like this one since a lot of solutions have artificial too rapid energy loss. So the fact that it acts this way is sign of more mastery rather than less (it’s trivial to reduce energy faster).

Came here with the same nitpick. It settles down too slowly. Also takes too long to start moving after changing angle. So it's in this weird spot where it's both more + less reactive than real water.

Just seems like some fun art to me, could have been named anything.

It may be some special water or water in special circumstances.

Could it be that in space or low gravity water behaves more like this?

Nope, in space/low grav you would still have the friction between the water molecules. Additionally, in space/low grav the water would want to clump.

how about: it's a 2d simulation, not a slice through a 3d one, so you should probably not expect any intuition to apply? (Fun to watch, though!)

It does calm down, but never stills. But the ocean never stills, so I would still give this full credit/an A+

I looks like it is more compressible and elastic than normal water which may cause the behaviour shown. If I'm not mistaken normal water is very hard to compress.

Would be neat if it simulated the air too. As-is, you can open up bubbles in the middle of the volume of water. Still a fun project.

Same. Feels like gravity on the moon rather than earth. Perhaps a gravity setting would be nice.

It could be water, under different pressure and gravity. (or not).

Laggy on mobile devices also.

What's the point of this comment? Are you worried that someone wouldn't know that it doesn't look realistic? And might get sick by drinking something with fluid dynamics that resemble the simulation?

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