physics waterfall

Howdy,

I saw the video below in an older thread on this forum which shows water having nice physics and looking like a water stream, anyone know how it is roughly made?

http://www.cg.tuwien.ac.at/research/publications/2010/bagar2010/bagar2010-video.avi

Just look at the homepage of the project. There you will find all information.
https://www.cg.tuwien.ac.at/research/publications/2010/bagar2010/

, tnx