Houdini Pyro Tutorial: Implosions and Smoke Suction

Quick walk-through of how smoke suction and implosion effects are achieved in Houdini using the pyro solver.
I would encourage to experiment with this in your own smoke simulations and try to adjust the size, location, or the strength of the divergence and sink volumes. You can also achieve some cool effects by animating the divergence source scale between positive and negative values. Another idea would be to have several divergence sources scattered around.
Hope you enjoy this technique and find it useful.
0:00 Intro
0:03 Density Source Overview
1:18 Smoke Suction
3:24 Animating Suction Scale
4:12 Smoke Sink

[@minafishi]

Another quality post, thanks for uploading!

[@pure_vlados]

Realy helpful tut, thanks!

[@anastasiiadots3848]

Thank you for the tutorial! Gonna try it

[@antoniopepe]

Gold. Thanks 🙏

[@3rdDim3nsn3D]

Awesome! Thanks a ton! I just started learning Houdini (the 5th and final time😂)
and pyro stuff is the next point on my list.
Very valuable video😊

[@chadbonanno5724]

DAMN! THANKS!
you are an amazing person,. have a GREAT day

[@a3onsvp]

Thanks, gonna try to use it for a portal effect

[@mnymanVFX]

Awesome! This technique is perfect for that. There is a node called Gas Axis Force that works in a similar way that could be cool to experiment with as well.

[@jackcg10]

i didn’t know i can actually use negative divergence values 😂 thanks a lot!!

[@sleeper6000]

If you combine a scatter with copy to points and some geometry this could also produce some interesting flattening fall off at the end of the simulation. This was really neat to learn and play around with. Thank you!

[@mnymanVFX]

Thats a great idea. Would love to see what you make

[@dtmgfxhome]

Oh my god, i have this exact problem for a project im working on, was completely lost and was almost going the way of reversed sim, thankss alot for this, will try it out.

[@mnymanVFX]

Hopefully it proves itself helpful. You can also mess around with the Gas Axis Force-node. It works in a very similar way.

[@pure_vlados]

Same shit

[@starwarz8479]

Really cool, I'm curious if you will run a performance comparison with the same effects between Houdini pyro vs Axiom solver

[@DuyNguyen-si3bq]

First comment for you bro :3 Keep it up 💪

[@mnymanVFX]

Thank you for the kind support Duy! It means alot.

[@Darkovius]

Hey, I like all your tutorials. I'm wondering, is there some guide to get the theme you have on Houdini ?

[@starwarz8479]

Would love to see more tutorials with Axiom

[@mnymanVFX]

I remember you can use the pressure field in the axiom source shape node at a negative value to achieve a similar effect with Axiom. Maybe I will talk about Axiom in the future, but it still feels like a very niche topic.