|
Vortex generators exist to trip the airflow from laminar to turbulent to keep it attached over a surface, thus reducing the dead wake and the drag. An air inlet to an engine has no need to keep the airflow attached, it serves no purpose. If the engine needs more air, make the duct to it larger.
The attached pic shows the idea, the dimpled ball has a turbulent boundary layer that stays attached further over the back of the ball.
|