影像科学与光化学2017，Vol.35Issue(2)：106-113,8.DOI:10.7517/j.issn.1674-0475.2017.02.106
利用激光诱导炽光研究高压环境下液体燃料层流扩散火焰碳烟分布的二维图像
Study on Two-dimensional Images of Soot Distributions in Laminar Diffusion Flames of Liquid Fuelsat Elevated Pressure by Laser Induced Incandescence (LⅡ)
周磊 1张红兴 1王震1
作者信息
- 1. 哈尔滨工业大学深圳研究生院机电工程与自动化学院,广东深圳518055
- 折叠
摘要
Abstract
This research focuses on the effects of an increasing pressure on the soot formation during combustion of vaporized liquid fuel.Firstly,soot formation is measured in a laminar diffusion flame of n-heptane up to 3.0 bar.The soot volume fraction in the diffusion flames has been measured using Laser Induced Incandescence (LⅡ) calibrated by means of the Line of Sight Attenuation (LOSA) technique.The 2-D images of soot distributions have been captured,and the integral soot volume fractions show power law dependence on pressures.Secondly,a specially designed High fueling system (called "doped flame") is presented in this paper.This setup allows for soot measurements in laminar diffusion flames of liquid fuel blends at elevated pressure.Fuels with two typical molecular structures,namely linear and saturated cyclic hydrocarbons,are examined in both non-oxygenated (n-hexane and cyclohexane) and oxygenated form (1-hexanol and cyclohexanol).The experiment data suggests that soot is more prevalent for cyclic structures relative to their linear counterparts.关键词
层流扩散火焰/液体燃料/碳烟分布/分子结构/高压/激光诊断Key words
laminar diffusion flame/liquidfuels/soot distributions/molecular structure/elevated pressure/laser diagnostics引用本文复制引用
周磊,张红兴,王震..利用激光诱导炽光研究高压环境下液体燃料层流扩散火焰碳烟分布的二维图像[J].影像科学与光化学,2017,35(2):106-113,8.
