Mixing up two liquids: 3dsmax, Realflow

[3DSpecialFX]

That is a very very good piece if work. I can do the same using realflow but until I get a more powerful machine that can handle large volumes of particles I will refrain from attempting again. Was spending too much time waiting for simulations to complete. With regards to the mixing of the liquids you can create the illusion of it happening by key framing a change in the material colour of the lighter colour particles to match the other colour. That's the only solution and it works. Check out

[RFC3514]

@3DSpecialFX - 160 thousand particles isn't a lot. Even 1 million particles only needs around 2.5 GB of RAM. The real issue is time (more particles need more simulation steps, otherwise they spread out all over the place) and disk space for the meshes (depending on the number of frames).

[bogieman987]

Reminds me of ice-cream for some odd reason lol

[kmncztms]

holy shit, awesome!!  How many hours did it take to make this?

[137bff]

holy shit thats fuckin awesome

[137bff]

awesome vid, how do you stop the simulation of the fluids displayed at 19 seconds?

[realflow100]

@137bff hey that easy go to the bottom of the emmiters menu and change the speed value to 0 but first stop simulating by simply pressing simulate again then change the value then start simulating again

[super6plx]

wow cool :D I can't wait till it's advanced enough to be able to mix two liquids to the point that they look like a new colour, you know, not just two groups of 80,000 shaded balls ;P

either way, very cool :D

[XAutomatedOwnerX]

@super6plx :D Yea now blender can do that

[lucaderiu]

Great work rockstar0815, thanks for sharing!

[realflow100]

Cool can you tell me the viscosity im making something similer

[3DDuarte]

Muito criativo, valeu a pena esperar todo esse tempo, parabêns!

Itajaí - Santa Catarina - Brasil

[rockstar0815]

Muito obrigado! Vocé é do brasil? Vivei quatro anos em Morumbi, São Paulo. Ja faz 12 anos que voltei pra alemanha. Também foi no brasil quando eu começei a usar o 3D Studio. Lembro que foi a versão 4 para MS-DOS :-)

[3DDuarte]

Você fala muito fluentemente o português. Você conhece a empresa chamada The Game Creators?

[PSNDonutDude]

this was amazing... not the mixing i was expecting but unless you have an experienced simulation artist. or possibly computers can't do it. either way this is good none the less

[rockstar0815]

thx! i did it expect to mix like this way when i was planning the scene, but to confirm it i had to render it :)

[joemoet2009]

wow must 1 month of rendering

[rockstar0815]

not a month, but certainly a few days ;)

[TheCrystalDuck]

I can offer my Phenom x4 and 5770, if you want to re-render ; )

[adge610220]

nice one! n thanks for mentioning render times.

[rockstar0815]

thx!

[Chuckq1]

your particles seem to big

[rockstar0815]

yes, i had to compromise between particle size & count and available computer resources.

[realflow100]

@rockstar0815 HEY!!!! a dubble colored mesh make it mix perectly into other color!!

[newracy2585]

its really good, but something missing....

[Nanodev]

Soon, we will be able to make real HDR shit

[effectic]

lookd like tank of shit is mixing))))))

[Bluebull114]

wow, the end result looks like sewage... : )

[studionightbird0]

this must of taken a ridicules amount of time to simulate xD great job

[binlactus]

very cool man!

[a08877]

sry but did they really mix up ? the colors are the same at the end...

[RBChoman]

Amazing

[Albertotube23]

my god! 36 hours and 14 GB that's A LOT!!! ...........but it was worth it! Amazing job man!

[Stickfire]

This must have taken days to render...

[Pyinator]

THe second one looked really good in the beginning.

Good Job

[chulk607]

Really nice work mate, excellent stuff. I especially like the 2nd one. Will have to get my hands on realflow. Is it tricky to use or is it reasonably similar to other particle things?

Like say, particle flow, but with a few more bells and whistles?

If you don't mind too, what spec did you use to render this on?

[delphibery]

amazing...very good work

[BlackTwister999]

Grrrrrrrrrrreat Work

[fgxdx85]

I love it, great! In the chocolate test you could easily fade the color of both fluids to something in between the two stand alone colors.

i only wished lightwave's HV system was that powerfull. maybe it is, but i am really having a hard time doing anything like that.

[vmmlh]

that's pretty amazing to watch

[rockstar0815]

thank you very much! :)

[jameson63926]

Ive only briefly played with RF, but can you ever FULLY mix 2 liquids? Or is it because each one is a separate mesh sequence they can never completely blend together?

[rockstar0815]

exactly, that is the problem. theoretically, you would have to make the mesh so fine (and thus high particle count), that the anti-aliased pixels of the rendered picture would mix into the new color of the two meshes.

[jameson63926]

Theoretically, but you'd either spend years calculating or theres just not really a computer that could handle it, right?

[rockstar0815]

doing it on an near-"atomic" level would take really lots of cpu power and time, possible it would take years.

doing it on screen-resolution level is far less detailed (needed level of detail dependent from output rendering resolution), but still, will take much longer than the calculations done for this video.

[appelstijl]

Or, you do it the simple way... you make the material the color you think these two would be when mixed together and just animate them to gradually change into that color. But that would not be nearly as good looking as mixing the two with very tiny particles

[rockstar0815]

yeah, we had that kind of attempt before, but i don't like the animated material idea either, i'd rather render it again with lots more particles...

[caphits]

The only way they would look good is if you rendered like twenty trillion globs. That would be some good mixing. It would probably only take a few months to render too!

Still a cool video.

[Kajio3033]

This does an interesting job of pointing out one of the few problems RealFlow has. Things won't mix well, as the individual particles are rather easy to see.

Good work from your part.

[MzTizzleCakez]

Did U have 2 Use the particle system right ?

[beepIL]

excellent work buddy!

i wish we could simulate these two materials mix and form a different color and not only mix their particles between one another... that could be really cool, seeing it changing texture and color based on the materials you mix...

[rockstar0815]

thank you! may be some day i will look deeper into material transformation like the one you mentioned.

[mbunds]

What machine (or machines) did you simulate and render this on? P4, Dual-Core, Quad-Core? Clock Speed? Render Farm?

[rockstar0815]

rendering was done on a quad-core q6600@2,9 ghz per core. 2 gb ram, 3dsmax 9 and realflow 4

[rockstar0815]

thanx!

[koolJ]

very nice simulation, although it would be cool if the white and brown chocolate stuff had their colors mix as well, into a lighter brown/tan, like they would in real life. (of course that means you would have to use the melt material or something I think, to get that result)

[rockstar0815]

i think realflow itself does not offer the option to actually combine 2 liquids into one, like in reality would happen. but on the other side, in real life, liquids do not mix into one, they just mix on atomic level, which is far more high resolution than realflow does offer for simulation. still, i know what you mean ;)

[koolJ]

Not mixing like that, it does mix liquids, thats why they are interacting like in this video. However, haven't you ever seen a droplet of food dye disolve (the key word) into a cup of water? It doesn't stay clear, it appears to be only one solid color after time. This is why the mental ray melt material was created.

[IIJazzyII]

Sorry but that's fucking amazing.

How long did that take to simulate?

[koolJ]

36 hours, if you would watch the end of the video.

[Mulcebar]

man thats awesome. that must have taken ages to sim and render.

[rockstar0815]

yes, it did :) rendering are mentioned at the end of the video. one has to be patient ;)

[rockstar0815]

i uploaded it in 640x480 resolution, so, high quality *should* be available. don't know what went wrong, though.

[toi007]

why doesnt people put this with high quality possibility view, but its great!

like 800x600 pixels possibility

[dun3SNAK3]

Very nice 5/5

[TheFreddle]

Respect, Respect, never seen such a good simulation before.

[rockstar0815]

thanks a lot!

[nuclearspike]

This is pretty cool.

[rockstar0815]

thanx!