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Old 15th Jul 2011, 12:21
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HarryMann
 
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Yes, very much so...

I find there is always a lot of confusion between separated flow, turbulent flow and laminar flow. The later two are boundary layer states, the former (whilst to some extent the result of boundary layer effects) is a total flow phenomena.
Saying the flow is turbulent does not mean its separated, indeed a turblent boundary layer has a greater facility to resist negative pressure gradients (behind a body) and remain attached.. .nor laminar meaning low darg and attached (indeed again, laminar flows easily separate , the classic being a 'laminar separation bublle' at the l.e. of a thin foil at high alpha; draggy too (pressure drag)... whilst the laminar layer itself has low (frictional) drag.
So it isn't difficult to spot a lay commentator when it comes to aerodynamics, or certainly flow discussions

Last edited by HarryMann; 15th Jul 2011 at 21:24.
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