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thompsonx -> RE: Science anarchists (4/28/2017 8:48:49 PM)
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ORIGINAL: InfoMan
ORIGINAL: thompsonx
Fire does not produce a vacuum, which has been demonstrated via the NASA video fire being ignited in zero gravity:
Actually it does. As the fuel and air mixture burn the combustion process draws oxygen
from the atmosphere to support combustion. When the fuel is exhausted the flame goes out.
Jesus you are phoquing stupid.
you have 2 videos which conclusively prove you wrong in the very thing you quoted.
If fire produced a vacuum - then when the fuel air mix was ignited, it should draw in
the air intake valve, as it is a pressure driven stopper.
Valves in an ic engine are not pressure driven stoppers. A spring closes the valve and a cam opens it.
Jesus you are phoquing stupid.
If fire produced a vacuum - then in zero gravity the fire should produce a
Torus/implode - as the higher pressure air would instantly rush into the lowest point
of pressure.
These events do not happen and thus prove you wrong.
Wrong again dumbass. As oxygen is consumed in the flame more oxygen is drawn into the flame to sustain
combustion until the fuel runs out.
Flame does not produce a vacuum.
Yet here you say it does
Hot Air Rises.
Cold Air Descends.
cool air moves in to replace the heated air, which rises, which fuels the flame.
This is from a larger article you may wish to read. You might wish to use it as a pry bar to get your feet out of your mouth.
Jesus you are phoquing stupid.
"In zero-G, convection does not carry the hot combustion products away from the
fuel source, resulting in a spherical flame front.
In the year 2000, experiments by NASA confirmed that gravity plays an indirect role
in flame formation and composition.[12] The common distribution of a flame under
normal gravity conditions depends on convection, as soot tends to rise to the top of a
flame (such as in a candle in normal gravity conditions), making it yellow. In
microgravity or zero gravity environment, such as in orbit, natural convection no
longer occurs and the flame becomes spherical, with a tendency to become bluer and
more efficient. There are several possible explanations for this difference, of which
the most likely is the hypothesis that the temperature is sufficiently evenly distributed
that soot is not formed and complete combustion occurs.[13] Experiments by NASA
reveal that diffusion flames in microgravity allow more soot to be completely oxidized
after they are produced than do diffusion flames on Earth, because of a series of
mechanisms that behave differently in microgravity when compared to normal gravity
conditions.[14] These discoveries have potential applications in applied science and
industry, especially concerning fuel efficiency.
https://en.wikipedia.org/wiki/Flame
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