Fluid injected in fluid (ink in water)

#1

Hi All

I´m trying to have a scene where ink is injected into a water filled compartment. I get the basic Smoke setup all right with domain, emitter (particles life for 1frame with initial speed) and all that. But the smoke parameters seem to have no options to adjust for the special fluid/fluid purpose. So I had a look at the particle dynamics which show such parameters. Then again I find it very difficult to adjust them accordingly. Maybe you have ideas about reasonable settings?
And finally when the smoke emitting particles life longer (which they have to or else particle dynamics wont work) the whole smoke emitting looks just like a bunch of spheres.
Any thoughts on this?

Cheers,
Rogurt

#2

Smoke??
For proper fluid mixing you’ll have to wait a little more, there is a SPH fluid sim in development that supports proper fluid mixing.

http://farsthary.wordpress.com/2010/01/12/particles-diffussion-or-mixing-mixable-fluids/

Mind you that it is an entry from a previous development stage. The state of particle fluid sim is now that it can ‘skin’ the particles, or you can voxelize them (volume texture) and there are all kinds of parameters for the fluid behavior. An algo for skinning the particles better is being worked on. The code is under revision by the particle maintainer. Expect to see it in an official release by the time of 2.6 or the next release.

#3

too bad. thanx anyway

#4

Can’t you just mix it with a dark fluid? like in the end cycle of the animation… Sorry I am bad with fluids so I’m just thinking outside the box here…lol
Interesting question though, I need to experiment more with fluids. …sure is my cryptonite at the moment. :slight_smile:

#5

I had this need a while ago, back around 2.46 I think. I posted this on youtube, trying to get people to understand my concept.
(final workaround - youtube)

blend file of animated geometry/material:
http://loklomedia.com/files/fakeFluid.zip

#6

I watched the youtube “workaround” video but I cant see anything like mixing fluid in fluid. Is that the correct video? I´ll have a look at the file when I´m back at my desk…

#7

Thinking aloud, 2 different colored particles inside a saved fluid mesh is the only way i can see this working.

#8

there isn’t really a fluid mixing effect, but the top of the vessel is filled with water, with a 2nd fluid mixing into it (which was the clear animated mesh with refraction) - it is more used to show that two clear fluids of different viscosity mix together. Agreed it’s nothing like the reference video, but as I said in the info of the video, it was sufficient for the project and client’s needs. Sometimes good enough really is good enough.

#9

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