NB how the air is NOT staying laminar over this stalled wing at a high angle of attack.
Then tell me how it's simply NOT going to keep flow attached on a short/er boat tail because I don't have Reynolds' number!
Lets NB that an electron traveling at around 175 000km/h (IIRC) does not stop until it's inside the 2nd surface.
Any air molecule that may have been ionized by said electrons may well be traveling a lot slower, but also does not stop until IT is the molecule on the opposite charged surface.
ie: Airspeed is of little importance here and Boundary Layer is no longer part of the equation!
For anyone else who doesn't give a buck afout Renaults or his nucking fumber after seeing that,
See B here for how you do DBD:
in this paper here:
https://www.nature.com/articles/s41598-019-42284-w
Here are all the high voltage doodats you might require:
https://ioninjection.ponderworthy.com/articles/parts