Quote:
Originally Posted by winkosmosis
The only drag that matters is the resistance the air encounters going in.
|
Since after passing through the radiator, cooling air generally exits in a turbulent fashion to the aerodynamically dirty underside of a vehicle, that should be taken into consideration too.
Which is why it makes sense that blocking grille openings above the stagnation point has the dual benefit of reducing cooling drag
and diverting that airflow to the relatively smooth top & sides of the vehicle, vs. underneath.