Incomplete model of gravitational vortex power plant
Incomplete because water comes in through the pipe not tangenteally.
There should be a fish pass underneath in the floor below where the tube dilivers water in  
But I have not tried to put it in yet (incomplete model)
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Bilge pump 12 volt 600 gallon per hour (about 2400 litres per hour
15 watt solar panel
Here we go!
not full speed
(little solar panel powering it)
spinning
Now I show you something
The vortex builds up and builds up.
Building up slowly
water level slowly rising
vortex
water
building up,  vortex storing energy?
It will flow over the top
ct
Almost there. Still rising.
starts to drip at the side
p
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coming over the top now!
NOW, you  would expect
putting this in
to slow the flow (to block the water even more)
So it would come over the top more!
But the water level is  actually
dropping!
And I think it will drop below the level of the green pipe
The water level drops more even as you watch
Plenty of torque!
A bicycle spoke holds it in place!
I can stop it but if bigger, too much torque perhaps?
You can quickly raise  or lower the plastic "turbine"  to better understand the process or test different "turbine shapes"
Raised up goes faster.
Still works
a
Another neat thing is that you can have several spokes
Quickly change them to try different shapes and designs
Hard to do with one hand!
Easy with 2 hands
Bicycle spoke just goes in!
And new turbine head to check out~
We can put it exactly where we want it!
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In the vortex
We can adjust finely
Water is high and torque is less so perhaps?
Less power being used?
Relationship?  vortex height to power usage?
Lower the head down the spoke
Now it is going faster!
I have another spoke and "turbine" here!
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Flip the other one off!
Removing spoke from hole
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Putting the next one in.
Now we have a different type of turbine!
(trying to put the spoke through the bottom hole)
training
so Anyway
This is going slow again
but it has pretty decent torque!
And you can raise it up!
going a bit faster!
Notice, it is taking more power
Because you can see the water level is lower now. 
Surprising aspect of vortex flow!
You Block the vortex with a "turbine"
But the water goes faster through the blocked vortex!
When you are taking power away the water flows faster!
Faster through it.
I hope that helps
15 watt, 12 volt bilge pump 600 GPM raising the water 15 to 20 cm.
Demo for makerfaire.
Give me a like or comment if captions were helpful!
(It took 45 minutes  to do them).
