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Title: Small-angle neutron scattering study of soot particles in an ethylene-air diffusion flame

Abstract

Neutron scattering techniques have been applied to the study soot particles in an ethylene diffusion flame. Primary particle sizes have been determined as a function of height-above-the-burner. The practicality of the method has been demonstrated. (author)

Authors:
; ;  [1];  [2]
  1. PALMS, UMR No. 6627 du CNRS, Universite de Rennes I, 35042 Rennes cedex (France)
  2. Aerosol and Nanostructures Laboratory, Istituto Motori, National Research Council of Italy, Via Marconi 8, 80125 Naples (Italy)
Publication Date:
OSTI Identifier:
20727294
Resource Type:
Journal Article
Resource Relation:
Journal Name: Combustion and Flame; Journal Volume: 145; Journal Issue: 1-2; Other Information: Elsevier Ltd. All rights reserved
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ETHYLENE; COMBUSTION; SOOT; PARTICLE SIZE; SMALL ANGLE SCATTERING; NEUTRON BEAMS; FEASIBILITY STUDIES

Citation Formats

Mitchell, J.B.A., Le Garrec, J.L., Florescu-Mitchell, A.I., and di Stasio, S. Small-angle neutron scattering study of soot particles in an ethylene-air diffusion flame. United States: N. p., 2006. Web. doi:10.1016/j.combustflame.2005.12.003.
Mitchell, J.B.A., Le Garrec, J.L., Florescu-Mitchell, A.I., & di Stasio, S. Small-angle neutron scattering study of soot particles in an ethylene-air diffusion flame. United States. doi:10.1016/j.combustflame.2005.12.003.
Mitchell, J.B.A., Le Garrec, J.L., Florescu-Mitchell, A.I., and di Stasio, S. Sat . "Small-angle neutron scattering study of soot particles in an ethylene-air diffusion flame". United States. doi:10.1016/j.combustflame.2005.12.003.
@article{osti_20727294,
title = {Small-angle neutron scattering study of soot particles in an ethylene-air diffusion flame},
author = {Mitchell, J.B.A. and Le Garrec, J.L. and Florescu-Mitchell, A.I. and di Stasio, S.},
abstractNote = {Neutron scattering techniques have been applied to the study soot particles in an ethylene diffusion flame. Primary particle sizes have been determined as a function of height-above-the-burner. The practicality of the method has been demonstrated. (author)},
doi = {10.1016/j.combustflame.2005.12.003},
journal = {Combustion and Flame},
number = 1-2,
volume = 145,
place = {United States},
year = {Sat Apr 15 00:00:00 EDT 2006},
month = {Sat Apr 15 00:00:00 EDT 2006}
}
  • The influence of hydrogen addition to the fuel of an atmosphere pressure coflow laminar ethylene-air diffusion flame on soot formation was studied by numerical simulation. A detailed gas-phase reaction mechanism, which includes aromatic chemistry up to four rings, and complex thermal and transport properties were used. The fully coupled elliptic governing equations were solved. The interactions between soot and gas-phase chemistry were taken into account. Radiation heat transfer from CO{sub 2}, CO, H{sub 2}O, and soot was calculated using the discrete-ordinates method coupled to a statistical narrow-band-correlated K-based wide-band model. The predicted results were compared with the available experimental datamore » and analyzed. It is indicated that the addition of hydrogen to the fuel in an ethylene-air diffusion flame suppresses soot formation through the effects of dilution and chemistry. This result is in agreement with available experiments. The simulations further suggest that the chemically inhibiting effect of hydrogen addition on soot formation is due to the decrease of hydrogen atom concentration in soot surface growth regions and higher concentration of molecular hydrogen in the lower flame region. (author)« less
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