russ_watters said:
It doesn't look to me like it bears any resemblance to a Tesla turbine/pump: it looks like a pretty normal centrifugal pump to me. Could you explain what you are seeing that others are missing?
Here's an example of a centrifugal blower with flat blades:
http://www.nyb.com/Catalog/Bulletins/589.pdf
Here's some flat pump impellers: http://www.marineengineparts.com/shopsite_sc/store/html/page310.html
Hi Russ,
I'll try in as few words as possible, to explain my thoughts.
Almost any centrifugal pump that sucks in even the least amount of air will generally lose prime and cease to pump.
This pump receives air and disperses it at an extreme small bubble size.
Power needed, is proportional to speed and depth of operation. At a depth of say one meter, power is transformed into pressure on the liquid inside the impeller and until this energy becomes great enough to overcome the surrounding water pressure, there will be no flow, it will be much like a centrifuge.
When speed and pressure from energy transfer reach the point of being greater than the enclosing water, an outward flow will take place, water dispelled will leave a void, or low pressure area in the center of rotation, this will become lower than atmosphere, allowing air to be pushed in. At the same time, the lower side of the impeller, because of a very small blade area, water is returned to the center of rotation, where it mixes with the air and again is increased in pressure as it moves through the upper and increasing blade area.
The comparison to Tesla's Turbine pump, is based on the pressure and sliding physics of the air and water mix as it is being pushed through the ever increasing blade surface, (top cover plate and angle of blades toward the outer diameter).
The pressure on the moving liquid and air mix, due to different viscosity of each, should result in air moving to the top cover plate surface and the increasing blade surface area, where it is spread into a very thin layer by the hydraulic action of the water. Friction and different viscosity of the water and air as they slide inside the inverted U shaped chamber, is what I think gives such a fine diffusion to the air.
These actions are, in my mind, the same that takes place in this or a Tesla design.
The high pressure flow out of the top portion of the impeller set, and the return water flow inward at the bottom, in my mind is much like shear-lines between upper atmosphere jet streams.
I have already been wrong in this thread, this is what I see, so let's hear it from anyone, agreed or not.
Ron