Making Simple Nebulous Fluid Dynamic

[jrn208]

hi there, i'm working on a project in which initially i used a preset nebulous fluid for a space cloud effect, however it's just too static for the purposes i'm using it for, and i've thus far been unable to find a relatively simple way to take the look i had with the static fluid and basically just make it have a bit of float so that it's not entirely static.

anytime i try to change the original into dynamic grid (from constant gradient), it messes up the look of the actual fluid and doesn't seem to be what i want. ultimately i want to have a pretty much pre-emitted field of fluid that doesn't grow or change except it has some float. does anyone have any tips on how to go about this?

thanks!

[allegro]

in post?

give it a really really low simulation rate?

[duncanbrinsmead]

The nebula preset is a purely textural fluid. You can animate the texture in a non-dynamic fashion by simply keyframing the texture time attribute. Also other texture attributes can be keyframed, such as impode, depending on the desired effect. If you want it to respond to things in a dynamic fashion you can make the velocity grid dynamic and make the coordinateMethod=DynamicGrid, and the coordinateSpeed = 1. It will then smear if you push the fluid( with fields, painted start velocity, etc.).

Duncan

[12monkey]

Hi Duncan.

Speaking of textural Fluid. There is jellyfish nebula preset. My question is: Do you KNOW it will looks like a jellyfish before you set texture attr that way, or it is just a coincidence?

If my first guess is the case, then how do you know that.

[duncanbrinsmead]

I generally know what the attributes will do, but I didn't create that one, and I'm guessing that the person that did just called it the way it looked. The range of shapes through texturing and the built in gradients is rather limited, but one can get any general shape or look by painting grid values.

Duncan