gravity-buoyancy underwater wheel

[teslonian]

Hmmm, well I hope this isn't too much off topic but I had an idea a few years back. The idea is this. You place a clear plastic half sphere or a dome in a tank of water. There is a small hole at the very top of this dome in which water flows in a stream to the water level at the bottom of the dome. Mostly air is contained inside of the dome.

The first reaction might be well the water level will begin rising and pushing air bubbles out of the dome and it will fill up with water and then that's the end of that.

What if the stream of water was sufficient enough to penetrate below the water level and cause lots of tiny little bubbles to be formed. The stream of water would then mix and become part of the water under the dome while the tiny little bubbles would pop and replenish the air inside of the dome?

A fine balance can be found in which the water level would never rise to push the air out and the extra air in the bubbles would keep continuously replenish the air inside of the dome to allow the continual flow of water into it. 

[Cherryman]

Hmmm, well I hope this isn't too much off topic but I had an idea a few years back. The idea is this. You place a clear plastic half sphere or a dome in a tank of water. There is a small hole at the very top of this dome in which water flows in a stream to the water level at the bottom of the dome. Mostly air is contained inside of the dome.

The first reaction might be well the water level will begin rising and pushing air bubbles out of the dome and it will fill up with water and then that's the end of that.

What if the stream of water was sufficient enough to penetrate below the water level and cause lots of tiny little bubbles to be formed. The stream of water would then mix and become part of the water under the dome while the tiny little bubbles would pop and replenish the air inside of the dome?

A fine balance can be found in which the water level would never rise to push the air out and the extra air in the bubbles would keep continuously replenish the air inside of the dome to allow the continual flow of water into it. 

http://overunity.com/15375/an-interesting-experiment-with-water-and-air/msg438925/#msg438925