I would like to know if a lifting force will be created by the Coanda effect from high velocity air that is directed underneath a half-toroid shaped saucer by a centrifugal impeller.
I am seeking an answer to this question to make sure that I fully understand how the Coanda effect creates a lifting force so I do not waste time and materials building a prototype of it.
To illustrate how such a saucer and a centrifugal impeller could be put together to generate a lifting force via the Coanda effect, I created a 3D CAD drawing of it and I have displayed this drawing below in three different viewing perspectives.
The first drawing shows a cross-sectional view with its main components labeled, the second drawing shows a top side perspective view, and the third drawing shows a bottom side perspective view.
I want to point out that this saucer is not a true half-toroid shape because one side of this toroid goes up at a 45 degree angle and the other side slopes downward in an arc. The reason for this 45 degree angle is to have the airflow go across a flat surface which should minimize the Coanda effect across this particular surface area of the saucer.
If I understand the Coanda effect correctly, the high velocity air exiting the centrifugal impeller should be pushed up into the half-toroid area of the saucer by ambient air pressure. Some of the kinetic energy of the high velocity air molecules pushing against the bottom surface of the saucer's toroid area should be transferred into the saucer which should cause the saucer to move in an upward direction.
There is a circular cutout in the center of the saucer to allow air to flow into the centrifugal impeller. (Inflowing air should rapidly rotate in order to enter into the rotating impeller creating an air vortex above the top surface of the saucer. This vortex should aid in lifting up the saucer, although this is secondary to the answer that I am seeking.)
Will high velocity air directed underneath a half-toroid shaped Coanda saucer by a centrifugal impeller create a lifting force?
I am thinking that the half-toroid area of the saucer should be larger in size so that the high velocity air will exert itself against a larger surface area resulting in a stronger lifting force. I also think that the air coming out of the centrifugal impeller should be as close as possible to the bottom surface of the saucer in order to keep any pockets of low static air pressure from forming there.
I have revised the original drawing to show this larger size and to show the repositioned centrifugal impeller.