Quote:
Originally Posted by christofoo
I'm a sucker for flow charts. 
(... but don't forget, this is the wife's car.  )
...
When I looked at this I thought: 
Only 0.02? So a well-designed gap in an air-foil can be ignored for vehicle design purposes.
That doesn't seem like the right analysis?
This was always one of my favorite posts, BTW. gap vs drag coefficient |
Ignoring the bottom configuration,we can see that the gap will add from 8% to 30% drag depending on its location.And that's a best-case scenario,considering that there are no additional 'missing' pieces of the wing and perfect onset/source flow towards the sink.
If you can do the baffles,they will really help sequester the turbulence and hinder its ability to telegraph its effects around the interface of the box.