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The motion I want is very close to water soaking in the sinkhole (just without spiral aspect).

I'd like to use Noise texture on a flat plane - it should move to the center and preserve pattern as much as possible, without morphing into "Saturn rings"

enter image description here

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You could manipulate texture space coordinates. You would need to make one go from the center outwards and then animate a value added to it. Gradient texture could be used:

enter image description here

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  • $\begingroup$ Thanks for reply, I was thinking about that. But it produces too much dissolving effect, rather than actual moving to center $\endgroup$
    – Serge L
    Commented Jan 9, 2019 at 12:02
  • $\begingroup$ This is cool. I will experiment with your node tree. $\endgroup$
    – Rita Geraghty
    Commented Dec 1, 2019 at 18:05

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