Quote:
Originally Posted by orange4boy
I just thought of some other questions I have not seen answered elsewhere.
Regarding the point of stagnation and the underbelly. Does the air under the car have a lower or higher pressure? I think it's a low pressure area but it's not obvious to me.
Is it better to have a sharply defined, upward sloping air dam parallel to the lowest points on the car or a bumper curved under the car from the stagnation point (like in the template?) the trailing edge of which terminates parallel to the lowest point under the car?
Thanks.
|
The air going under the car takes a straighter path to the rear than the air going around or over the car and according to Bernoulli's theorem,it's pressure would be higher than those other two pathways.---------------------------- With respect to the airdam.if it is no lower than the lowest undercarriage member,then it will not aggravate frontal area,causing a drag increase.Whether the air should go over or around the car is actually something that should be taken on a case specific basis.Currently,airdams are configured to encourage flow around the sides of vehicles.------------------------- With respect to the template,I'd like everyone to ignore the forebody and contemplate the rear aspect of the car.This is where the low-drag challenge resides.