Strain-induced extinction of hydrogen-air counterflow diffusion flames - Effects of steam, CO2, N2, and O2 additives to airA fundamental study was performed using axisymmetric nozzle and tubular opposed jet burners to measure the effects of laminar plug flow and parabolic input velocity profiles on the extinction limits of H2-air counterflow diffusion flames. Extinction limits were quantified by 'flame strength', (average axial air jet velocity) at blowoff of the central flame. The effects of key air contaminants, on the extinction limits, are characterized and analyzed relative to utilization of combustion contaminated vitiated air in high enthalpy supersonic test facilities.
Document ID
19920047015
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Pellett, G. L. (NASA Langley Research Center Hampton, VA, United States)
Northam, G. B. (NASA Langley Research Center Hampton, VA, United States)
Wilson, L. G. (Lockheed Engineering and Sciences Co. Hampton, VA, United States)