TY - GEN
T1 - A burning rate emulator for study in microgravity
AU - Zhang, Y.
AU - Bustamante, M. J.
AU - Sunderland, P. B.
AU - Quintiere, J. G.
AU - Ferkul, P.
PY - 2013
Y1 - 2013
N2 - A gas-fueled burner with embedded heat flux gages has been used to emulate the burning characteristics of several liquid and solid fuels. Dubbed the Burning Rate Emulator (BRE), it establishes the heat of gasification (L) in steady burning by measurements of surface temperature, incident flame heat flux, and flow rate of a gaseous fuel mixture. The mixture is selected with appropriate properties such as the heat of combustion and radiation character by the soot point. Results are shown to accurately emulate methanol, heptane, and PMMA pool fires of 50 mm in diameter. Used in a microgravity environment, a BRE can readily identify stable and steady burning conditions yielding relevant fuel properties: heat of gasification, surface temperature, heat of combustion, and smoke point. These properties identify a potential real condensed-phase fuel that can burn in microgravity. Repeated experiments identify a range of fuel conditions that can support microgravity burning. The flammability region is bounded by extinction values, and critical conditions needed for ignition can also be established. The plausibility of the BRE has been demonstrated for normal gravity conditions, and a burner without heat-flux sensors has achieved an appearance of steady burning in the NASA 2.2-s drop tower. Recent tests with a 50-mm-diameter burner including heat flux measurements conducted in a 5.18-s drop facility have indicated stable flames with ethylene.
AB - A gas-fueled burner with embedded heat flux gages has been used to emulate the burning characteristics of several liquid and solid fuels. Dubbed the Burning Rate Emulator (BRE), it establishes the heat of gasification (L) in steady burning by measurements of surface temperature, incident flame heat flux, and flow rate of a gaseous fuel mixture. The mixture is selected with appropriate properties such as the heat of combustion and radiation character by the soot point. Results are shown to accurately emulate methanol, heptane, and PMMA pool fires of 50 mm in diameter. Used in a microgravity environment, a BRE can readily identify stable and steady burning conditions yielding relevant fuel properties: heat of gasification, surface temperature, heat of combustion, and smoke point. These properties identify a potential real condensed-phase fuel that can burn in microgravity. Repeated experiments identify a range of fuel conditions that can support microgravity burning. The flammability region is bounded by extinction values, and critical conditions needed for ignition can also be established. The plausibility of the BRE has been demonstrated for normal gravity conditions, and a burner without heat-flux sensors has achieved an appearance of steady burning in the NASA 2.2-s drop tower. Recent tests with a 50-mm-diameter burner including heat flux measurements conducted in a 5.18-s drop facility have indicated stable flames with ethylene.
UR - https://www.scopus.com/pages/publications/84943391362
M3 - 会议稿件
AN - SCOPUS:84943391362
T3 - 8th US National Combustion Meeting 2013
SP - 1469
EP - 1482
BT - 8th US National Combustion Meeting 2013
PB - Western States Section/Combustion Institute
T2 - 8th US National Combustion Meeting 2013
Y2 - 19 May 2013 through 22 May 2013
ER -