SLICE
Structure & Liftoff In Combustion Experiment
Other · MSG flow duct
Research brief.
From the NASA challenge brief
Run in the Microgravity Science Glovebox using the flow duct built for SPICE.
study of gravitational effects on phenomena such as liftoff, blowout and soot formation
investigate the influence of gravity, fuel dilution, and inlet velocity on the structure, stabilization, and sooting behavior of laminar coflow methane-air diffusion flames
investigate the influences of fuel dilution, inlet velocity, and gravity on the shape and structure of laminar coflow CH4-air diffusion flames
AI synthesis.
Across every indexed paper for SLICE
The AI backend isn't connected, so summaries can't be generated right now.
What the experiments revealed.
12 of 12 extracted findings · verified first, then by AI confidence
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01
Microgravity sooting flames exhibit lower soot temperatures and higher soot volume fractions compared to normal gravity counterparts.
Other · NTRS 20140017780 · p. 2 · AI confidence 95% · Unverified
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02
Soot distribution shifts from the flame centerline to the wings when transitioning from normal gravity to microgravity.
Other · NTRS 20140017780 · p. 2 · AI confidence 95% · Unverified
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03
Buoyancy induces a reduction of the flame radius through radially inward convection near the flame front.
Other · NTRS 20150002322 · p. 1 · AI confidence 95% · Unverified
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04
Buoyant and nonbuoyant luminous flame lengths are proportional to the mass flow rate of the fuel mixture.
Other · NTRS 20150002322 · p. 1 · AI confidence 95% · Unverified
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05
Buoyant and nonbuoyant flame structure is mainly controlled by the fuel mass flow rate, with secondary effects from fuel dilution and inlet velocity.
Other · NTRS 20150002322 · p. 1 · AI confidence 95% · Unverified
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06
Computed and measured nonbuoyant flames are noticeably longer than their 1g counterparts.
Other · NTRS 20150002322 · p. 1 · AI confidence 95% · Unverified
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07
The effect of fuel dilution on flame shape is negligible when the flame shape is normalized by the methane flow rate.
Other · NTRS 20150002322 · p. 1 · AI confidence 95% · Unverified
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08
Eliminating buoyancy (microgravity) or increasing fuel concentration causes the flames to become longer and wider.
Other · NTRS 20150011070 · p. 5 · AI confidence 92% · Unverified
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09
Soot volume fraction was determined using an absolute light calibration method involving incandescence from a flame-heated S-type thermocouple.
Detection · NTRS 20140017780 · p. 1 · AI confidence 90% · Unverified
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10
Flame shape, size, lift-off height, and soot temperature were determined from line-of-sight flame emission images.
Detection · NTRS 20140017780 · p. 1 · AI confidence 90% · Unverified
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11
The numerical model showed good agreement with experimental measurements for flame shape and lift-off height in both microgravity and normal gravity conditions.
Detection · NTRS 20150011070 · p. 5 · AI confidence 90% · Unverified
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12
Microgravity flames have larger scales and longer residence times compared to normal gravity flames, allowing for the study of a wider range of flame conditions.
Other · NTRS 20150011070 · p. 1 · AI confidence 90% · Unverified