Hello everyone…
I am playing around with the scaling of flip fluids, tried to make a couple of tests, posted in the houdini fx facebook page and trying to understand it so I can achieve what I want..

https://vimeo.com/97012155 [vimeo.com]
https://vimeo.com/97016252 [vimeo.com]

So what I really need to do is make a 200 foot waterfall. If I scale it correctly then of course it should react correctly, but I want to have my objects manageable.

https://vimeo.com/95223915 [vimeo.com]

I could change the units in preferences…that's always an option

How can I get this to sim and react like a 200 foot waterfall without having to scale the objects up?

Just try to change Spartial Scale and Mass Scale parameter under Flip Solver>Volume Motion>Solver. By default these are in MKS, if you are in CGS make it 0.01.

And also change Force Scale.