Quote:
Originally Posted by freebeard
At Permalink #71 I posted links that explain that the air going over the top lags behind the air underneath.
The underbody is a [semi-]closed plenum while the upper body is in free air.
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That's technically impossible. All the air reaches the rear of the car at the same time, regardless of path. It's a conservation of mass criteria, mandated by the Bernoulli theorem. Velocity and pressure can be all over the map, but it all arrives at the same time once to the rear end.