Is it possible to add aerodynamic fences to direct the airflow around the side of the cars A pillar ?
Will the airflow just trip over the fence and result in more drag ?
I ask because i noticed the sides around my windshield have a raised 1/4" channel that i would have thought would snag the sideways traveling air and direct it upwards.
However, when i did my tuft test i found that the air just tripped over the obstruction and continued onward, resulting in a large A pillar vortex.
Below is an image of wing fences used on a MIG fighter jets wings to direct airflow
Wing fence - Wikipedia, the free encyclopedia