Quote:
Originally Posted by sendler
I hear a lot of talk about skin drag but it seems it is completely inconsequential compared to turbulent wake drag when talking about shapes moving through air. The NCFMF video shows that a round rod with the same max thickness as the ideal airfoil, and only a small fraction of the skin area (1/20th?), has 9 TIMES the drag.
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http://ecomodder.com/forum/showthrea...rag-25378.html
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Add whatever skin is needed to get the most ideal shape you can conveniently use and you will have the lowest drag. |
Yes,as ecomodders it's an intellectual culdesac.There's nothing we can do about it.
With respect to the CFD analysis though,it would be helpful if they told us what drag they were measuring or representing.Their data is presented in a format that's unconventional and begs expansion.Especially in light of the fact that they're reporting essentially half the drag previously reported by other researchers.