TY - GEN
T1 - Numerical simulations of soot kinetics in spherical diffusion flames
AU - Lecoustre, V. R.
AU - Sunderland, P. B.
AU - Chao, B. H.
AU - Axelbaum, R. L.
N1 - Publisher Copyright:
Copyright © 2009 by The Combustion Institute.
PY - 2009
Y1 - 2009
N2 - Detailed soot kinetics were numerically investigated in steady microgravity spherical diffusion flames. The flames involve an ethylene/nitrogen mixture flowing from a spherical burner into an oxygen/nitrogen mixture. A detailed chemistry model including intermediate elementary reactions up to pyrene is coupled with a description of the soot particle dynamics using the method of moments with interpolative closure. Radiative heat losses were modeled using the discrete ordinates method with a statistical narrow band method for gas species (CO2, H2O, and CO) and the Rayleigh approximation for soot particles. Soot volume fraction, rate of soot formation/destruction, and heat losses by radiation were studied for different locations of the outer boundary. The predicted soot concentrations are low. Soot radiation decreases temperatures, which favors the outward migration of PAH and soot owing to a decrease in H radical concentrations.
AB - Detailed soot kinetics were numerically investigated in steady microgravity spherical diffusion flames. The flames involve an ethylene/nitrogen mixture flowing from a spherical burner into an oxygen/nitrogen mixture. A detailed chemistry model including intermediate elementary reactions up to pyrene is coupled with a description of the soot particle dynamics using the method of moments with interpolative closure. Radiative heat losses were modeled using the discrete ordinates method with a statistical narrow band method for gas species (CO2, H2O, and CO) and the Rayleigh approximation for soot particles. Soot volume fraction, rate of soot formation/destruction, and heat losses by radiation were studied for different locations of the outer boundary. The predicted soot concentrations are low. Soot radiation decreases temperatures, which favors the outward migration of PAH and soot owing to a decrease in H radical concentrations.
UR - https://www.scopus.com/pages/publications/84946593926
M3 - Conference contribution
AN - SCOPUS:84946593926
T3 - Fall Meeting of the Eastern States Section of the Combustion Institute 2009
SP - 584
EP - 591
BT - Fall Meeting of the Eastern States Section of the Combustion Institute 2009
PB - Combustion Institute
T2 - Fall Meeting of the Eastern States Section of the Combustion Institute 2009
Y2 - 18 October 2009 through 21 October 2009
ER -