>> The "water" looks way too viscous, for the diameter of that pipe I
>> would expect the flow rate to be much higher.  Just my gut
>> feeling, it looks more like oil.
> I think the viscosity is correct. I think your feeling is more
> linked to the fact that there is no splashes or bubbles in the
> water.

My feeling was more to do with the water coming out the end of the pipe, it 
seems to be flowing too slowly to keep the whole diameter filled (if you 
know what I mean).  For the flow rate that is visible I would expect the 
water to be running along the bottom edge of the pipe, not taking up the 
whole pipe.

But as already commented, maybe this is because it is not clear what size 
the pipe is, if it is a small pipe (eg a drinking straw) then it looks about 
right.

Still, excellent work!

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