Render simple smoke with tyFlow without Phoenix FD
#3
(08-01-2021, 01:45 PM)d4rk3lf Wrote: Here's my quick attempt:
https://www.youtube.com/watch?v=QkCm06eXtVM

Attaching the file too.
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The way that people did it back in the day (when fluid simulations were not present), is that you create very small particles (maybe even with little opacity), spawn them all the time, and drive them with some wind and turbulence.
The more particles you have, the less size of them (individually), they will look more detailed and cleaner.
Motion Blur plays a BIG role in this effect, because it nicely  blurs all these small dots, creating an illusion of thin smoke.
(I've added MB in post, in my example).

Hey,
You achieved a very realistic smoke swirl effect!! This is what I've been doing as a workaround. I'd render lots of small particles with VrayVelocity pass and add Vector Motion Blur effect in Resolve Fusion afterwards. Unfortunately it doesn't produce 100% smooth smoke.

My focus was mainly on the rendering methods. I was hoping to achieve effect similliar to the thummbnail image of this video:
https://www.youtube.com/watch?v=0CoIA9l5yxo
Unfortunately Allan did not show how he rendered the particles.

The other problem I have with this method is particles dissapearing. No matter how hard I try, I cant get material opacity to work with tyFlow.
What I would do as a workaround is:
1. Add a delete operator based on particle age.
2. Add a Scale operator decreasing particle size within their lifespan, with a small interpolation value (something like 0,04)
This method is still far from perfect, because the particles always decrease their size too fast, resulting in them dissapearing rapidly.
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RE: Render simple smoke with tyFlow without Phoenix FD - by shirogtr - 08-02-2021, 01:06 PM

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