TFd Velocity explained
I have received a number of questions about the way I achieved some TurbulenceFD effects and yesterday this message reached me:
You don’t know me but I’ve been admiring your Turbulence FD work and wondered if you could give me some advice of how to achieve one of the bits of work on your website.
It’s the explosion 01 (see below)
I’ve been searching the web for ages trying to find an explosion similar and just can’t find any other examples as good as this one. The spikes protruding out of the smoke is what I’m really after.
I’m guessing you used some sort of thinking particles along with turbulence fd? Am i right?
Any help would be so so greatly appreciated as I’m working on a personal project and this would really help me.
Thank you for your time”
dust-effect for an AXE commercial
so I had a minute to spare and here the advices with a C4D example file I handed out:
I guess the easiest way to explain is with a sample. unfortunately I can’t give you the original file because it officially belongs to the client.
one thing which is crucial to work with TFD is to understand what a fluid container represents. if you grasp that concept … you’ll become a powerful TFD designer.
basically when you load a TFD container in your scene, it looks empty but isn’t. it’s filled with “something” and you need to stir it up to create good looking effects.
and to twirl that “something” up, I often use X-Particles. afterwards any temperature or density created with an TFD emitter is following that movement!
hint: that is why I often use the “Velocity Channel” in the TFD Viewport Preview to check how things are/will move along while TFD-cache is running!
ok … lets have a quick view at the “TFDvelocitySample.c4d” I attached you (Download it here):
it is very basic but should bring the concept across:
– Particle-Emitter to stir-up the “something” inside the TFD Container with an emitter-tag.
we only need to set “Velocity Weight” for it. just play around with it later for fine-tuning. (usually between 3 and 15 works well.)
obviously the emitter itself becomes very powerful with its settings of speed, birthrate and so forth!
so play around with it to stir things up the way you like it!
I used a disc in this sample and set only Temperature to keep this simple.
in the Container-tab activate “Cache Velocity” … otherwise it will not work!
(obviously temperature as well for this particular example.)
and in the Simulation-tab make sure you adjust the “Velocity” settings.
well with TFD you always need to fine-tune, test and experiment and these settings are not the magic key.
I certainly exaggerated with the scale and 100% usually does the job.
“Clip Below” will basically “scale” the whole thing so go ahead and set it for a test to 100 to see what it does exactly.
time to go ahead to cache the TFD setup and watch the effect it will create.