Quote:
Originally Posted by freebeard
Why? Think of it like a rolling floor in a wind tunnel. It virtualizes an air cushion near to the body.
...if you put them in all the wrong places.
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The last thing in the world that you want is for the air, immediately adjacent to the body of the car to 'move.'
The ability of this air to stay 'pinned' to the surface is the only thing that separates you from a car with Cd 0.88.
If you cover a car with plasma, you're going to get Cd 0.88. It's impossible for it not be happen. It goes directly to the operational foundation of fluid mechanics, especially boundary layer dynamics.
All a moving-floor wind tunnel facilitates is, lack of boundary layer under the car ( which never made a difference with passenger cars anyway), and the ability to study airflow around the rotating wheels, of which, the merits have yet to be properly, and scientifically addressed in the popular literature.