Absorption correction of two-color laser-induced incandescence signals for soot volume fraction measurements

Abstract

A numerical iterative procedure is presented for the evaluation of the effect of signal absorption in two-color laser-induced incandescence measurements. The correction process is applied to our experimental data in an axisymmetric flame [Appl. Opt. 44, 7414 (2005)]. The influence of signal trapping on peak soot temperature and on soot volume fraction has been found to be minimal. Some numerical tests were performed to investigate the effects of soot concentration, flame size, and soot refractive index on the magnitude of the signal absorption correction.

© 2006 Optical Society of America

Two-color laser-induced incandescence (2C-LII) technique for absolute soot volume fraction measurements in flames

Silvana De Iuliis, Francesco Cignoli, and Giorgio Zizak
Appl. Opt. 44(34) 7414-7423 (2005)

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