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View Full Version : Study finds rough surfaces may eliminate drag, reduce global warming



bogdog
01-19-2014, 07:53 PM
Itís a major discovery that could redefine how everything from yacht hulls to swimming suits are designed.





http://www.sciencerecorder.com/news/study-finds-rough-surfaces-may-reduce-friction-drag-could-reduce-global-warming/ (http://www.sciencerecorder.com/news/study-finds-rough-surfaces-may-reduce-friction-drag-could-reduce-global-warming/)

Paul Pless
01-19-2014, 07:56 PM
nascar banned the vinyl top in 1970. . .

http://img204.imageshack.us/img204/9575/70superbird38.jpg

Gerarddm
01-19-2014, 08:10 PM
Mythbusters did an experiment where they calculated gas mileage for a car. First they calc'd a stock car, then they covered it in plasticine and made golf ball-like dimples in it. The dimpled car got better mileage.

Steve McMahon
01-19-2014, 11:11 PM
http://www.sciencerecorder.com/news/study-finds-rough-surfaces-may-reduce-friction-drag-could-reduce-global-warming/ (http://www.sciencerecorder.com/news/study-finds-rough-surfaces-may-reduce-friction-drag-could-reduce-global-warming/)

Someday all these discoveries will come together and we will have it figured out. Non destructive energy production and storage, drastically reduced consumption of energy, etc. The challenge is removing energy from the economic growth model where it currently figures quite predominately and many are willing to literally kill to keep it there.

fishrswim
01-20-2014, 01:25 AM
If you haven't already seen it, this is an example of microscopically rough surface technology. I sooo wanted to coat the hull of my boat with this stuff until I saw the price.

http://www.youtube.com/watch?v=IPM8OR6W6WE

skuthorp
01-20-2014, 04:50 AM
Not new, research into shark and dolphin skins pinpointed something like this at least 40 years ago and I owned a Blue Hole vinyl canoe with a slightly bubbled surface to the water, like a coarse eggshell sort of, that got it's surface from the research so the blurb said. A dry surface, water bubbled off it and supposedly there was a thin layer of air between the water and the canoe. Interesting to ferry glide in fast water, and you could detach the gunwales and fold it into itself to stuff in the back of a station wagon.:D

David W Pratt
01-20-2014, 01:20 PM
Viking long boats had one lapstrake (?7th) on each side reversed to generate a luft pulse (air sausage)
Evidently, it increaseed speed, lowered drag

Gerarddm
01-20-2014, 01:40 PM
^ Trying to visualize how that would work, can't.