caa a22 4500 445370378 CHVBK 20180317142944.0 cr unu---uuuuu 170323e20110801xx s 000 0 eng 10.1007/s00340-011-4382-x doi (NATIONALLICENCE)springer-10.1007/s00340-011-4382-x The effect of particle aggregation on the absorption and emission properties of mono- and polydisperse soot aggregates [Elektronische Daten] [F. Liu, G. Smallwood] This study concerns the effect of soot-particle aggregation on the soot temperature derived from the signal ratio in two-color laser-induced incandescence measurements. The emissivity of aggregated fractal soot particles was calculated using both the commonly used Rayleigh-Debye-Gans fractal-aggregate theory and the generalized Mie-solution method in conjunction with numerically generated fractal aggregates of specified fractal parameters typical of flame-generated soot. The effect of aggregation on soot temperature was first evaluated for monodisperse aggregates of different sizes and for a lognormally distributed aggregate ensemble at given signal ratios between the two wavelengths. Numerical calculations were also conducted to account for the effect of aggregation on both laser heating and thermal emission at the two wavelengths for determining the effective soot temperature of polydisperse soot aggregates. The results show that the effect of aggregation on laser energy absorption is important at low fluences. The effect of aggregation on soot emissivity is relatively unimportant in LII applications to typical laminar diffusion flames at atmospheric pressure, but it can become more important in flames at high pressures due to larger primary particles and wider aggregate distributions associated with enhanced soot loading. Her Majesty the Queen in Right of Canada, 2011 Liu F. Institute for Chemical Process & Environmental Technology, National Research Council, Building M-9, 1200 Montreal Road, K1A 0R6, Ottawa, Ontario, Canada aut Smallwood G. Institute for Chemical Process & Environmental Technology, National Research Council, Building M-9, 1200 Montreal Road, K1A 0R6, Ottawa, Ontario, Canada aut Applied Physics B Springer-Verlag 104/2(2011-08-01), 343-355 0946-2171 104:2<343 2011 104 340 https://doi.org/10.1007/s00340-011-4382-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00340-011-4382-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Liu F. Institute for Chemical Process & Environmental Technology, National Research Council, Building M-9, 1200 Montreal Road, K1A 0R6, Ottawa, Ontario, Canada aut NATIONALLICENCE 700 1- Smallwood G. Institute for Chemical Process & Environmental Technology, National Research Council, Building M-9, 1200 Montreal Road, K1A 0R6, Ottawa, Ontario, Canada aut NATIONALLICENCE 773 0- Applied Physics B Springer-Verlag 104/2(2011-08-01), 343-355 0946-2171 104:2<343 2011 104 340 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer