at low velocity, flow is smooth, with individual fluid particles flowing parallel to each other. At higher velocity flow becomes turbulent. In general the flow will still be in the same direction but there will be a small chaotic component. The interesting part is that the chaotic component (turbulence) often makes the flow more efficient.
To get really dorktastic... if you solve the Navier-Stokes equations (the equations that govern fluid dynamics) for a smooth geometry you will always get the laminar solution. You have to intentionally introduce a disturbance to get the turbulent solution. In terms of turbulence it is the small imperfections that really matter.
Loc: Ozark Mountains in SW Missouri
Well that make sense to me, and that "Tornado Wick Jet Alcohol Stove" is pretty darn cool too. The video showing how to make was especially cool. The tubing bending trick using sand was awesome, and so was his can cutter.
Loc: Marina del Rey,CA
I figure it had to be something along those lines. A friend of mine used to work for Boeing on the Space Shuttle project. She wasn't an engineer, an accountant or something like that, I think. I also know a couple of people who work for aerospace companies in El Segundo.
Don't get me started, you know how I get.
My new alchy stove made from Miller Lite aluminum bottles got its first field test on Wednesday. I used it to warm up a can of beans on a day hike with an inch of snow on the ground, gusting winds, in 27 degrees F, at 3200 ft. It took more time to prime than at home, and I doubt it would have made water hot enough for pasta, but I call that a successful test in extreme conditions.
At home, it bings water to a full boil within 4 minutes of lighting it.
"Just enough to stay warm, dry, hydrated, and fed."
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