How to make bubble in water fluid?

Discussions about the use of Realflow
neogemini
Posts: 4
Joined: Thu May 18, 2017 7:43 am

How to make bubble in water fluid?

Postby neogemini » Thu May 18, 2017 7:56 am

Hi guys!
To day i watched 2 videos about real flow on vimeo :
https://vimeo.com/215849031
https://vimeo.com/42133987
And I don't know how to make bubbles inside main fluid. Some one help me, Thanks so much.


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Oldcode
Posts: 738
Joined: Thu Nov 03, 2011 11:28 pm

Re: How to make bubble in water fluid?

Postby Oldcode » Thu May 18, 2017 11:45 am

That is a good question.

I suspect it starts with a second emitter and having the particles mixed in together as they flow. Obviously, there would be fewer of the "air" particles. When its time to create the mesh, only generate geometry for the "fluid" particles, which will leave a gap anywhere an "air" particle is occupying a space.

There's probably many more details that would have to be worked out, but that's a place to start.

Good Luck,
"My sword and my service are yours."

"Then forever remind him of his vow, Knight of the Old Code."

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ChristianZ
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Joined: Sat Sep 09, 2006 11:37 am
Location: CH

Re: How to make bubble in water fluid?

Postby ChristianZ » Fri May 19, 2017 7:27 am

Other methods include a "filter" daemon where you transfer particles to a container emitter depending on speed, vorticity or collision with an object. Then, the container emitter will show particles that have higher surface tension, different densities etc. and you could attach a gravity daemon that moves them upward and a drag daemon with shield effect turned on, both acting only on the bubble particles.

Again other methods involve scripting where you convert particles of the water emitter into bubble or foam particles.
RF10 standard, System specs: OSX 10.11, MacPro 4.1 2xXeon, GTX980Ti, 64 GB RAM

neogemini
Posts: 4
Joined: Thu May 18, 2017 7:43 am

Re: How to make bubble in water fluid?

Postby neogemini » Mon May 22, 2017 9:43 am

Thanks for your advices @ChristianZ and @Oldcode. I'm trying to make it.

neogemini
Posts: 4
Joined: Thu May 18, 2017 7:43 am

Re: How to make bubble in water fluid?

Postby neogemini » Tue May 23, 2017 9:32 am

I've found a new solution for it. I get particle from DY_Domain to HY_Domain, after that add bubble for HY_Domian. So, the first step is ok. I will update video soon.

neogemini
Posts: 4
Joined: Thu May 18, 2017 7:43 am

Re: How to make bubble in water fluid?

Postby neogemini » Fri May 26, 2017 6:58 am

Yup! I had success :D
https://vimeo.com/218824369

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ChristianZ
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Joined: Sat Sep 09, 2006 11:37 am
Location: CH

Re: How to make bubble in water fluid?

Postby ChristianZ » Fri May 26, 2017 1:21 pm

It is looking good :)
RF10 standard, System specs: OSX 10.11, MacPro 4.1 2xXeon, GTX980Ti, 64 GB RAM


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