back pressure

[dsn24]

is the stream under the car exiting through the diffuser always exited to the atmospheric press or to a pressure lower than that one give the upper surface??

can ne one give reasons and explan?

thanks!!!

[dsn24]

is the stream under the car exiting through the diffuser always exited to the atmospheric press or to a pressure lower than that one give the upper surface??

can ne one give reasons and explan?

thanks!!!

[Drew Price]

Because Bernoulli.