TY - JOUR
T1 - Preferential diffusion and concentration modification in sooting counterflow diffusion flames
AU - Axelbaum, R. L.
AU - Law, C. K.
AU - Flower, W. L.
N1 - Funding Information:
The work at Davis was supported by the U.S. Air Force Office of Scientific Research under Grant No. 85-0147. The work at Sandia National Laboratories was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Chemical Sciences. We thank Professor I. Glassman of Princeton University for his valuable insights and comments.
PY - 1989
Y1 - 1989
N2 - An experimental investigation has been conducted on the influence of the mobility of inert additives on soot formation in propane and ethylene counterflow diffusion flames. Inerts used were helium, neon, argon, or krypton, and the results show that while the mobility of the inert has practically no effect when a small amount of inert is added to the oxidizer side, the influence is significant when added to the fuel side in that krypton, being the least mobile inert, yields the greatest soot loading while helium, being the most mobile, yields the least. By relating the spatially-resolved soot volume fractions to the corresponding profiles of temperature, velocity and species concentrations, it is demonstrated that this influence on soot loading is likely caused by concentration modifications of the fuel and the soot precursors due to the different mobilities of the inert additives.
AB - An experimental investigation has been conducted on the influence of the mobility of inert additives on soot formation in propane and ethylene counterflow diffusion flames. Inerts used were helium, neon, argon, or krypton, and the results show that while the mobility of the inert has practically no effect when a small amount of inert is added to the oxidizer side, the influence is significant when added to the fuel side in that krypton, being the least mobile inert, yields the greatest soot loading while helium, being the most mobile, yields the least. By relating the spatially-resolved soot volume fractions to the corresponding profiles of temperature, velocity and species concentrations, it is demonstrated that this influence on soot loading is likely caused by concentration modifications of the fuel and the soot precursors due to the different mobilities of the inert additives.
UR - http://www.scopus.com/inward/record.url?scp=58149367508&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=58149367508&partnerID=8YFLogxK
U2 - 10.1016/S0082-0784(89)80044-X
DO - 10.1016/S0082-0784(89)80044-X
M3 - Article
AN - SCOPUS:58149367508
VL - 22
SP - 379
EP - 386
JO - Proceedings of the Combustion Institute
JF - Proceedings of the Combustion Institute
SN - 1540-7489
IS - 1
ER -