Another Turbo Funnel

Of course, there is a lot of irony caused by the discussion of the original model. But if the TF was a spontaneous simulation, then everything is different here. In fact, the discussion about whether swirling fluid flows really move faster in closed pipes led me to research in this area.
And I will say in advance that yes. Really faster. This is proved by modeling the process in various programs. And in an experimental way, just watch the water drain from the sink. The water itself always tries to spin. Because it makes it easier and faster for her to leave the volume through a narrow throat. So this model is already the result of these studies and other people's inventions. I just took the formula.
For the curious, I will give links to articles below. And those who are too lazy to translate just know that water molecules are a kind of balls that have less friction in an orderly movement. After all, even Galaxies rotate in a spiral.
There were a lot of questions and an