Here is the description of the free Carrara version at ShareCG.
FLUIDOS is a Carrara 8.5 plugin that runs a modified version of the fluid simulators by Ryan L. Guy (https://github.com/rlguy) and Christopher Batty (github.com/christopherbatty). Now with spatially variable viscosity and obstacles can push fluid.

Updated

Version 1.401 05/15//2019 minor UI changes

Windows 32 and 64 bits and MacOS 64 bits