Calculation of maximum power coefficient of a wind turbine

[normandajc]

I have written a preprint on the calculation of a wind turbine power. Betz's theory is correct, it is made from the calculation of the kinetic energy of the fluid.

I do not question Betz's theory or that of precursors like Lanchester.

This calculation does not take into account the constraints on the structure of the wind turbine.

The hydrofoils on the sailboats allow to lift the sailboat and to reduce the forward forces. The wind allows the sailboat to move forward but also allows it to be lifted and yet the wind has not been doubled. Instead of creating stress on a keel, we create a flow around a profile to make the sailboat lift.

This is potential energy that is transformed into kinetic energy.

For a wind turbine, we can eventually transform stresses into additional energy production.

My preprint deals with this subject and I would like to have your opinion. A paper similar to my preprint is being submitted.
Before giving your opinion, I let you read my preprint

https://www.preprints.org/manuscript/202108.0191/v2

[normandajc]

here is a new version of the prepublication   https://hal.archives-ouvertes.fr/hal-01982516