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Old 01-29-2013, 11:49 AM   #1
Sowiedu
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Creating this effect

Hi,
I need to create an underwater vulcano eruption.
The lava is already done, what I need now is the smokish stuff the volcano spies out in the water, like in this video:

https://www.youtube.com/watch?v=U51cY6iod3U

Now the question is: Normally I would do this with FumeFX but we don't have it avialable right now, but we have Realflow. Is it possible and efficient to create this effect in Realflow? Or is FumeFX pretty much a must here?
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Old 01-29-2013, 01:33 PM   #2
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I'd try PFlow with 3ds Max volumetrics. Maybe even displaced spheres would be sufficient.
 
Old 01-29-2013, 01:39 PM   #3
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Thank you for your answer.
DO you think this is possible in PFlow without Thinking Particles? Like, all the turbulence, vorticity etc? To be honest I have no Idea how to achieve this with PFlow and make it look like the video.
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Old 01-29-2013, 02:33 PM   #4
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*edit: ah, sorry seems you already considered fumefx but dont have access...

Well than pflow or tp seems to be your best bet, just like scrimski suggested.

I dont know much about realflow but i've never seen a smoke sim done with it, so i guess its not an option.

Last edited by CHRiTTeR : 01-29-2013 at 02:43 PM.
 
Old 01-29-2013, 06:07 PM   #5
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Quote:
Originally Posted by Sowiedu
Thank you for your answer.
DO you think this is possible in PFlow without Thinking Particles? Like, all the turbulence, vorticity etc? To be honest I have no Idea how to achieve this with PFlow and make it look like the video.


It's definitely doable. Pete Draper wrote a tutorial about creating volumetric smoke with PFlow, it's either on his website, YT channel or in his book 'Deconstructing The Elements'(must-have).

You'll need a wind and a force operator and play around with the settings to create turbulence and vorticity.
 
Old 01-30-2013, 09:18 PM   #6
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Actually "Deconstructing the Elements" was my first book and I bought it some years ago...Must be at my parents house, need to find it. Thanks for the tip!
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Old 01-30-2013, 10:00 PM   #7
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Old 01-31-2013, 12:09 PM   #8
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wow, DanHibiki that indeed is very helpful. Maybe that's enough for our purposes, have to check back with colleagues. Thanks!
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Old 01-31-2013, 03:54 PM   #9
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You can do it in pflow I suppose if you use "cards" that face the camera but unfortunately it's not going to look as good as a fume(foom) sim. What you would achieve just using pflow is essentially the same as what you would achieve using Trapcode Particular in After Effects or something similar. I think that Realflow trick is neat but not a practical solution.

I think you could get away with is as long as it's not front and center and or if you hide it well. Your biggest uphill battle is going to be faking the look of the advection movement (the movement of the smoke pulling the smoke in and out of itself...or the curls).

But I'm curious to see what you come up with!
 
Old 02-01-2013, 11:16 AM   #10
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Quote:
Originally Posted by DanHibiki




But I cant get the smoke to look like that in the PDF, although I used exactly the same params.
And I get another script error:
"local variable 'stokesForce' referenced before assignment" at line number 77.

Also my particles are dropping down in a very non-smoke-like manner despite the emitter being rotated to point upwards
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Last edited by Sowiedu : 02-01-2013 at 11:49 AM.
 
Old 02-01-2013, 03:22 PM   #11
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Quote:
Originally Posted by Sowiedu
But I cant get the smoke to look like that in the PDF, although I used exactly the same params.
And I get another script error:
"local variable 'stokesForce' referenced before assignment" at line number 77.

Also my particles are dropping down in a very non-smoke-like manner despite the emitter being rotated to point upwards

not sure what that's about. Give this a shot, the main key is in playing with the scale and normalThresholdon line 61.
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Old 02-01-2013, 03:22 PM   #12
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