Smoke Solver | Tips and Tricks

[953u6015t 148]

Few tips and tricks to manipulate gas simulation.

1. Independent resolution grid. E.g. Overriding vel grid size independent to a density grid.

2. Creating additional utilities. E.g. gradient, speed, vorticity and etc which can be used to manipulate forces.

3. Forces via VEX and some example snippets.

smokesolver_v1.hipnc

P.S. Some of this technique are not Open CL friendly though.

 

[Arthur Ivanov 1]

Nice! Thanks for  sharing!

[bloodhawk 8]

On 9/23/2017 at 8:43 PM, 953u6015t said:

Few tips and tricks to manipulate gas simulation.

1. Independent resolution grid. E.g. Overriding vel grid size independent to a density grid.

2. Creating additional utilities. E.g. gradient, speed, vorticity and etc which can be used to manipulate forces.

3. Forces via VEX and some example snippets.

smokesolver_v1.hipnc

P.S. Some of this technique are not Open CL friendly though.

 

Thanks a bunch for the detailed setup!

Im genuinely curious, where does one start if they want to learn these things?

[953u6015t 148]

Subjective question, at least this how I started:

1. Shelf tools, learn the basics and concepts.

2. Dive into DOPs OTLs/HDAs and look around to see how they are implemented. My examples are just a product of what those Side Effects guys implemented.

3. Read Houdini's documentation.

4. Be inspired by all the test that posted on Vimeo/YouTube that doesn't look like off the shelf imagery.

 

Edited September 26, 2017 by 953u6015t

[953u6015t 148]

Another, focused on instancing smoke objects. Manipulating points with basic instancing attributes, i@cluster, v@scale and f@sourceframe. How to activate smoke object and holding a volume source. This method ideal for triggering independent gas simulation on impact data. Additional examples, e.g. grid clustering method for trail and non-trail which I'm merging from a separate thread.

smokesolver_v2.hipnc

[953u6015t 148]

Filament like structure, combination of Smoke Solver, VDB Advect Points + Volume Rasterize Particles.

smokesolver_v3.hipnc

[tamagochy 36]

It would be grate if you paste explanation in your custom stuff to fast understand what happen there))

But anyway thanks for sharing.

[953u6015t 148]

Good point. Something I have to improvise I guess. Initially I wanted to but was lazy, easier to put a setup than writing. I'll consider in future though!

[Mjag07 4]

Either way . A huge thanks for uploaded the scenes 

[gemrg 0]

Awesome files, little notes in them would add a lot, but hey you took the time to make these for everyone so thanks!

[cloud68 3]

Thank you so much

[feimos 1]

thanks very much !

[Bandu 1]

that's great, thank you !

[smooth_Yam 0]

thank you!This adds to my notes

[jamnique 1]

These are amazing man! Thanks for sharing. It's going to take me months to dig through this.

[fuat 9]

great. thank you very much

[murtaza 1]

Thanks alot

[chrysl666 0]

tnnnnnnnnnnxs !!  lots of infos 

[Dave Stewart 35]

What a goldmine of techniques and ideas, so glad I found this!! Wish I'd known about the independent resolution trick a few weeks ago, that one will really come in handy in the future.

Thanks SO MUCH for taking the time to put these together and sharing!!

--Dave

 

 

[mestela 605]

Really cool, thanks for sharing.