Analysis of calibration techniques for laser-induced incandescence measurements in flames
Analysis of calibration techniques for laser-induced incandescence measurements in flames
复制标题
火焰中激光诱导白炽测量的校准技术分析
DOI：
--
复制
发表时间：
2006
期刊：
影响因子：
--
通讯作者：
J. E. Buitrago
中科院分区：
文献类型：
--
作者：
J. Pastor;J. Garcia;J. M. Pastor;J. E. Buitrago
为了获得定量的煤烟浓度的结果，在火焰中使用激光诱导白炽（LII），不同的校正和校准程序是必要的。在这项工作中，两种不同的校准方法被施加到层流扩散火焰，以获得最合适的校准程序的炭黑条件。首先，在相同的实验条件下，实现了一系列空间分辨的消光测量和相关的激光诱导白炽测量。其次，一个单点光消光和相同的激光诱导白炽测量被用来计算校准常数LII测量通过实施迭代方法。由于激光片中的非均匀性、激光的衰减以及由于测量平面和检测系统之间的烟灰而导致的白炽信号本身的衰减，已经对数据执行了一些校正例程。最后，详细分析了它在真实的火焰中的适用性。
In order to obtain quantitative soot concentration results in flames using laser-induced incandescence (LII), different correction and calibration procedures are needed. In this work, two different calibration methodologies were applied to a laminar diffusion flame in order to obtain the most suitable calibration procedure for sooting conditions. First, a series of spatially resolved light extinction measurements were implemented and correlated to the laser-induced incandescence measurements under the same experimental conditions. Second, one single-point light extinction and the same laser-induced incandescence measurement were used to calculate a calibration constant for LII measurements by implementing an iterative method. Some correction routines have been performed to the data due to the non-homogeneities in the laser sheet, attenuation of the laser and attenuation of the incandescence signal itself due to the soot between the measurement plane and the detection system. Finally, an analysis of its applicability in real flames is detailed.