Soot volume fraction measurements in aero-engine model combustor outlet using two-color laser-induced incandescence  

作　　者：Linsen WANG Pengji DING Sijie YAN Jie LI Jingwei Zhang Chaozong WANG Zhibo CAO Quan ZHOU Jinhe MU Gang Meng Wenyan SONG Zhenyu XU Bo Yan Shuang CHEN 

机构地区：[1]State Key Laboratory of Aerodynamics,China Aerodynamics Research and Development Center,Mianyang 621000,China [2]Facility Design and Instrumentation Institute,China Aerodynamics Research and Development Center,Mianyang 621000,China [3]School of Nuclear Science and Technology,Lanzhou University,Lanzhou 730000,China [4]School of Power and Energy,Northwestern Polytechnical University,Xi’an 710129,China [5]AECC Commercial Aircraft Engine Co.Ltd.,Shanghai 200241,China [6]Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Hefei 230031,China

出　　处：《Chinese Journal of Aeronautics》2025年第3期249-261,共13页中国航空学报(英文版)

基　　金：supported by the National Key Research and Development Program of China(No.2020YFA0405700).

摘　　要：Quantitative measurement of Soot Volume Fraction (SVF) is an essential prerequisite for controlling soot particle emissions from aero-engine combustors. As an in-situ and non-intrusive optical diagnostic technique, Laser-Induced Incandescence (LII) has been increasingly applied for soot concentration quantification in various combustion environments such as laminar flame, vehicle exhaust, internal combustion chamber as well as aero-engine combustor. In this work, we experimentally measured the spatial and temporal distribution of SVF using two-color LII technique at the outlet of a single-sector dual-swirl aero-engine model combustor. The effect of inlet pressure and air preheat temperature on the SVF distribution was separately investigated within a pressure range of 241–425 kPa and a temperature range of 292–500 K. The results show that soot production increases with the inlet pressure but generally decreases with the air preheat temperature. Qualitative analysis was provided to explain the above results of parametric studies. The LII experiments were also conducted under 3 designed conditions to evaluate soot emission under practical operations. Particularly, weak soot emission was detected at the outlet under the idle condition. Our experimental results provide a valuable benchmark for evaluating soot emission in the exhaust plume of this aero-engine combustor during practical operations.

关 键 词：Aero-engine combustor Combustion diagnostics Soot Volume Fraction(SVF) Laser-Induced Incandescence(II) Inlet pressure Air preheat temperature 

分 类 号：V231.2[航空宇航科学与技术—航空宇航推进理论与工程]