Houdini 16.5 - Fluid NarrowBand simulation

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I had chance to test new Flip NarrowBand workflow and wanted to share resaults with community



Shark mesh details
Edited by CeeGee - Nov. 8, 2017 03:23:52

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shark_mesh.jpg (1.2 MB)

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Hi congratulation for the beautiful work.
It inspire me a lot.
I'm a freelance and I have interest in simulation.
Could you tel what kind of hardware is a minimum necessary to do some simulation like you did?
I do not understand noting about simulation sorry the simple question.
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I used 2 workstations for this test

i7 4790 with 32GB of ram and 2 x Xeon E5 20core per cpu with 128GB of ram.
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Looking good as always Igor! :O
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Thank you very much :-)
I will start with simple test but your explanation helped a lot ;-)
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thats very cool!

Would be nice to read some articles about the usage of this new feature. I turned on the narrowband option but i think it is not working at all.

So i guees that there is more steps to configure it. Am i right?


Cheers
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Hi,

Great! So you created this shark scene for the 16.5 demo. Did you use the new “incompressibility” feature for bubbles, or how did you achieve this “boiling after splash” effect? This makes it exceptionally real, I think. This phenomenon is usually missing from water sims or not enough real.
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raoninery
thats very cool!

Would be nice to read some articles about the usage of this new feature. I turned on the narrowband option but i think it is not working at all.

So i guees that there is more steps to configure it. Am i right?


Cheers

NarrowBand in ON bu default when you create Flip Tank from Shelf, you just get small layer of fluid inside your container. Its best to use in Tank setup where you need more depth to get proper look of your simulation,

xilofoton
Hi,

Great! So you created this shark scene for the 16.5 demo. Did you use the new “incompressibility” feature for bubbles, or how did you achieve this “boiling after splash” effect? This makes it exceptionally real, I think. This phenomenon is usually missing from water sims or not enough real.

No i didn't use new “incompressibility” feature, everything come from simulation, because now tank have more depth, not like in past where you are limited to have only surface to save memory and sim time. So everything come from collision and flip simulation.
WEB
http://www.igorfx.com/ [igorfx.com]

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Great work Igor !
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Hello. Probably off subject, but I'm trying to simulate the sinking of an object in a tank, and can't find a proper or clean way to disable the Narrow Band sim. Any tips? Thanks.
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Esteban Diacono
Hello. Probably off subject, but I'm trying to simulate the sinking of an object in a tank, and can't find a proper or clean way to disable the Narrow Band sim. Any tips? Thanks.
I am looking for the same thing. I don't know enough about how the narrow band is constructed to know what to change to get the old flip tank back.
AlphaJoe
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AlphaJoe
Esteban Diacono
Hello. Probably off subject, but I'm trying to simulate the sinking of an object in a tank, and can't find a proper or clean way to disable the Narrow Band sim. Any tips? Thanks.
I am looking for the same thing. I don't know enough about how the narrow band is constructed to know what to change to get the old flip tank back.

Oop, nevermind, I found it. When you use the shelf tool it creates a narrow band tank. Just go to the flip object in the AutoDopNetwork, and under the Initial Data tab change it from narrow band to Particle Field. It should then give you the old flip tank setup.
AlphaJoe
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AlphaJoe
AlphaJoe
Esteban Diacono
Hello. Probably off subject, but I'm trying to simulate the sinking of an object in a tank, and can't find a proper or clean way to disable the Narrow Band sim. Any tips? Thanks.
I am looking for the same thing. I don't know enough about how the narrow band is constructed to know what to change to get the old flip tank back.

Oop, nevermind, I found it. When you use the shelf tool it creates a narrow band tank. Just go to the flip object in the AutoDopNetwork, and under the Initial Data tab change it from narrow band to Particle Field. It should then give you the old flip tank setup.

Sorry for late reply, yes under inital tab you can chage to old flip tank setup.
Edited by CeeGee - Dec. 19, 2017 17:24:51
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Hi,

I' have some questions about the narrow band and the meshing workflow which give me nightmares !
I would like to know if it's possible to use the particle fluid surface to extend the mesh with the narrow band, in fact I already try it and it's working for some frames but at a moment no idea why it give me weird results like a box below the fluid mesh.

If you guys have an idea why it give me this result, I link screen shots of my mesh and parameters I used (the two first pictures are the result I want).

Cheers

Attachments:
mesh_00.png (171.3 KB)
mesh_01.png (60.2 KB)
mesh_02.png (115.4 KB)
mesh_03.png (250.7 KB)
parms_02.png (31.6 KB)
parms_region.png (59.2 KB)

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is narroband work on guidedoceanlayer things?
I tried guidedocfeanlayer mirror of “fliptank” on shelf tool, weired result

frame2,
Attachment Not Found



frame4,

Attachments:
20180524_130014.png (371.4 KB)

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the option FLUID OF NARROW BAND, only in houdini 16.5?
or can I find it in version 16.0?
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Hi Igor!
Is there any way you can show me the “Flip Tank configuration”?
I'm currently working on an animation where the whale makes a jump, I made the whale animation on Cinema 4D, and I export it in “alembic file”.

When I create the Flip Tank, and use the Narrow Band, the computer freezes!

The measurements of the tank are 20-5-8
Particle separation is 0.76
And for the coalition, the animated object that I'm using is a “Deformation of object”

My PC's specs are:
- Icore 7
- 32 Ram
- Two Nvida cards GTX 980

What do you think I am doing wrong?
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