This is from a presentation I did at the last Vancouver Houdini User Group. I show a "vorticity_fade" solver and rest field setup for flip. The vorticity fades out over time instead of just being a snapshot of current vorticity, and the rest fields (which is done post flip sim) can add tons of extra detail at render time. The example file I'm showing here isn't the greatest, but it should get the point across. ;P

Grab the file(s) here: fx-td.com/?p=329

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