Excess Liquid

[GrahamMac]

Through lots of testing I have found that liquid simulations sometimes appear to generate liquid from liquid! ie, a tiny drop of liquid on the side of some geometry keeps dripping without visibly being fed by the main source. I haven't been able to identify exactly what parameters cause this problem.

[Ivaylo Katev]

what type of advection? i suspect the classic one?

[GrahamMac]

Yes you are quite right, the classic mode appears to cause the fluid to keep expanding. I noticed that the help files suggest Forward transfer is best for liquids however the fountain example seen uses classic so I thought it was worth giving it a try but amongst all the other parameters I was trying I lost sight of what was causing the issue.
How come classic works for the fountain scene though?

[Ivaylo Katev]

the classic advection (the full name is semi lagrangian) can produce liquid "from nothing", however for the fountain this would be not a big problem if happens. in other hand the FT advection can produce bubbles in the middle of the liquid, especially in deep water.

[GrahamMac]

That is very useful to know about the bubbles! This is another thing for me to try out soon!
Thanks Ivaylo.