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

被引：66

作者：

De Luliis, S ^{[1
]}

Cignoli, F ^{[1
]}

Zizak, G ^{[1
]}

机构：

[1] CNR, IENI, I-20125 Milan, Italy

来源：

APPLIED OPTICS | 2005年 / 44卷 / 34期

关键词：

D O I：

10.1364/AO.44.007414

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A two-color version of the laser-induced incandescence (2C-LII) technique was implemented for measuring absolute soot volume fraction in flames. By using a calibrated tungsten ribbon lamp, soot peak temperatures were measured as a function of fluence at several locations in an ethylene diffusion flame by using a steeply edged laser beam profile. Above a certain fluence threshold, peak temperatures were tightly distributed just above 4000 K independent of the particle size and number density. Radial profiles of soot volume fraction were obtained and compared (not calibrated) with results from the laser extinction technique. Good agreement showed the validity of the 2C-LII technique at a controlled fluence. (c) 2005 Optical Society of America.

引用

页码：7414 / 7423

页数：10

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