Soot volume fraction measurements in aero-engine exhausts using extinction-calibrated backward laser-induced incandescence
Soot volume fraction measurements in aero-engine exhausts using extinction-calibrated backward laser-induced incandescence
复制标题
使用消光校准后向激光诱导白炽光测量航空发动机排气中的烟灰体积分数
DOI：
10.1007/s00340-009-3534-8
复制
发表时间：
2009
期刊：
影响因子：
--
通讯作者：
I. Vallet
中科院分区：
文献类型：
--
作者：
Jerome Delhay;P. Desgroux;E. Therssen;H. Bladh;P. Bengtsson;H. Hönen;John D. Black;I. Vallet
控制和减少来自航空涡轮机的烟灰颗粒排放需要适合于量化这些排放的监测系统。目前，这种排放是使用烟数技术估算的。这是一种萃取方法，对于现代燃气轮机的低排放水平不够敏感。在最近的一个欧洲项目中，AEROTEST，该项目的一部分旨在研究一种替代的烟尘监测技术，激光诱导白炽（LII）作为烟尘排放量化的现场光学诊断。对于航空发动机应用，特别是涉及大型涡轮的应用，需要在距涡轮机较远的距离处进行测量。LII技术在这方面是有利的，因为它提供了非侵入式测量，并且通过检测沿着与入射激光束相同的轴的各向同性LII信号（所谓的后向LII），激光器和检测器都可以构建在位于距涡轮机数米处的一个系统内。这个概念是在以前的欧洲项目AEROJET I和II中提出的。本文介绍了该系统的改进版本和程序开发，以实现可靠的和定量的碳烟体积分数测量的航空发动机排气。在某军用涡喷发动机不同转速下的排气中演示了后向LII技术的应用。
Control and reduction of soot particle emissions from aeronautic turbines requires a monitoring system suitable for quantification of these emissions. Currently, such emissions are estimated using the technique of smoke number. This is an extractive method, which is not sensitive enough for the low emission levels of modern gas turbines. Within a recent European project, AEROTEST, part of the project aimed at investigating an alternative soot monitoring technique, laser-induced incandescence (LII) as an in-situ optical diagnostic for quantification of soot emissions. For aero-engine applications, especially those involving large-scale turbines, it is necessary to perform the measurements at long distance from the turbine. The LII technique is favourable in this respect as it provides for non-intrusive measurements and, by detecting the isotropic LII signal along the same axis as the incoming laser beam (so called backward LII), both the laser and the detector can be built inside one system located several meters from the turbine. The concept was initiated in the previous European projects, AEROJET I and II. This paper describes the modified version of the system and the procedure developed to achieve reliable and quantitative soot volume fraction measurements in the exhausts of aero-engines. Application of the backward LII technique is demonstrated in the exhaust of a military turbojet engine for different engine speeds.
影响因子：
120.7
作者：
Pope, CA;Burnett, RT;Thurston, GD
通讯作者：
Thurston, GD