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COOL??? |
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graydog 
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Joined: 16 January 2006 Location: Wales Status: Offline Points: 1481 |
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 Topic: COOL???Posted: 11 March 2012 at 6:01pm |
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Cool perhpas not, some runs of a NACA duct, there is little air coming in but this is more to do with the fact it is imported very scaled down from ProE.
what is interesting to see here is the lamiar layer and how little effect on the flow the duct has  
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Yanto
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Posted: 11 March 2012 at 8:36pm |
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????? if you want to be cool open yer visor !!!
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graydog
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Posted: 11 March 2012 at 9:12pm |
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Alas the visor in the Quattro is fixed at the mo and on Ffeuen the screen is suitable to make such a duct work.
and using a naca duct in theory allows sufficient air to draft in with minimal aero drag loss. |
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GeoffBird
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Posted: 11 March 2012 at 9:45pm |
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Hi Graham, do you have any references for how well NACA ducts work in a turbulent (but attached, obv.) boundary layer?
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Right Time - Right Place - Wrong Speed
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graydog
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Posted: 11 March 2012 at 9:59pm |
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sorry no but I'll look. They are are as I understand best in lamiar/transisional phase but can be used in part to pull the layer back down. we could set up a kick before it if there is a specific layout you'd like to look at, feel free to send a igs over.
rgd gst |
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GeoffBird
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Posted: 12 March 2012 at 11:45am |
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Just general interest Graham - the tendency is to use NACA ducts by default - we had some inside the radiator duct on an F1 car - wondered whether they're the ideal in those conditions. I've even seen them used as exit ducts!
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Right Time - Right Place - Wrong Speed
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graydog
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Posted: 19 March 2012 at 8:04pm |
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latest in the line of making NACA ducts.....
  next stage is to glue/screw them to a board....cover them with some black shiny shuff..... |
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