Two of the popular ways are blowing (like you suggest) and
sucking...either speed up the slow stuff or get rid of it.
The biggest problem will be reducing drag enough that the pump driving the system doesn't use more fuel then is saved. Sucking will also get dust and debris stuck in the pores. If the sheet you are drilling into is structural, you may significatly decrease its strength
Another weird, albeit impractical one I have seen uses flush rollers at the end of an abrupt cutoff to encourage flow into an area of separation.
Quote:
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Originally Posted by AXMonster
To cut a long story short, I used to fly gliders (sailplanes). They have very low coefficients of drag, in fact it is one of the points that most glider pilots get obsessive about
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I envy...
That is a sport I'd love to get into.
One cheap technology that could be crossed over to cars is
gap seal tape.
- LostCause