Paint powder explosion

[Bertjenkins]

Hi - trying to get the effect of a paint powder explosion. (see below) On my version the particles emit the smoke nicely but they always feel quite low resolution even after resimulating. Any tips or tutorials on this?

Thanks

[MANUEL_MOUSIOL]

Just a guess, since I haven't done this, but maybe you need a lot more particles

[Bertjenkins]

Do you mean the source particles driving the smoke? I'll give that a go. I am also trying to emit particles and smoke in the same sim as well. Interesting but still feeling a little basic unless I use absolutely loads of particles. Hmmm

[Neilg]

I am also trying to emit particles and smoke in the same sim as well.

I would use particle flow to do those, have the smoke emit from geometry chunks that represent the little paint chunks. You can then tell phoenix to reduce the amount of smoke emitted based on distance/time from center so they fade out, and also have the scale of them reduce as they move away so it looks more like they are breaking away and releasing the powder.
It's always better to try and break things like this up into stages, doing it all at once means it's hard to tweak something without a big knock on effect.

[Bertjenkins]

great thanks, and now you know what I'm going to ask how do you set it up so that discharge/ emission fades away over time? At the moment it's getting there but the smoke stays the same opacity/density throughout. I'm actually using maya but it's the same principle using nparticles/ MASH to emit the phoenix smoke

[Neilg]

Phoenix has a modifier section.
I've not used it much but it looks like you can do some really fun stuff with it.

[Bertjenkins]

Great didn't think of that. Yes the main issue i am having at the moment is getting the nice random feel of the discharges and smoke opacity from different particle chunks.... it all seems a little uniform. Hopefully that does the trick. I will give it a try!

[Bertjenkins]

Really struggling with this now... deadline looming! Firstly the maya version doesn't seem to have a particle age/smoke option. You just have 'speed' or 'random'. These graphs can affect discharge, etc, so something is working! I have used these to some success but the thing I really can't get is the sense of movement. I only need a still at this stage, but at the moment my main problem is the the vray motion blur doing very weird things to the fluids. Can you turn off the motion blur on the fluids?

[MANUEL_MOUSIOL]

Maybe the motion blur multiplier set to 0 would work. Never used it though .

[Bertjenkins]

Thanks will try

[Svetlin.Nikolov]

Hey,

Discharge modifiers by Particle Age for Maya are coming in tomorrow's nightlies.

Cheers!

[Bertjenkins]

Now that's what I love about Chaos group- awesome!!!!

[Svetlin.Nikolov]

Hope it helps, please ping me if you have any issues

[Bertjenkins]

Hi do you think this effect is possible with pheonix? Any pointers or guesses on how it was achieved? Trying to work out whether it is a huge amount of particles or just smoke with nice turbulence. Perhaps it was done in fume/krakatoa?
https://www.pond5.com/stock-footage/...l?ref=dtiberio

[georgi.zhekov]

Yes, that should be possible. You can go both ways - either with smoke or by using particles.

After you have your explosion the way you like it you can use the RGB channel of the sources to drive the color for the smoke/particles. Then if you use the smoke option in the Render Options you set your smoke color to RGB or if you went for the particle way - you set a Phoenix Particle Texture to use the RGB for the Color of the Particle Shader.