Effects of water-contaminated air on blowoff limits of opposed jet hydrogen-air diffusion flamesThe effects of water-contaminated air on the extinction and flame restoration of the central portion of N2-diluted H2 versus air counterflow diffusion flames are investigated using a coaxial tubular opposed jet burner. The results show that the replacement of N2 contaminant in air by water on a mole for mole basis decreases the maximum sustainable H2 mass flow, just prior to extinction, of the flame. This result contrasts strongly with the analogous substitution of water for N2 in a relatively hot premixed H2-O2-N2 flame, which was shown by Koroll and Mulpuru (1986) to lead to a significant, kinetically controlled increase in laminar burning velocity.
Document ID
19880061536
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Pellett, Gerald L. (NASA Langley Research Center Hampton, VA, United States)
Jentzen, Marilyn E. (NASA Langley Research Center Hampton, VA, United States)
Wilson, Lloyd G. (NASA Langley Research Center Hampton, VA, United States)
Northam, G. Burton (NASA Langley Research Center Hampton, VA, United States)