The scene is using a very thin Phoenix Simulator and a small emitter cylinder inside a curved tube used to simulate a high pressure water system. In order for the fluid to be directed in a specific direction the Source is using Polygon IDs of an object to limit the emission only to those faces which share a certain ID. Everything is set in real scale so it should fit in any project when imported - approximately 10 meters wide and 1,5m. in height.
Additionally the effect is enhanced by V-Ray Environment Fog under the water arc.
