Reconstruction of soot temperature and volume fraction profiles of an asymmetric flame using stereoscopic tomography

被引：106

作者：

Huang, Qun-xing ^{[1
]}

Wang, Fei ^{[1
]}

Liu, Dong ^{[1
]}

Ma, Zeng-yi ^{[1
]}

Yan, Jian-hua ^{[1
]}

Chi, Yong ^{[1
]}

Cen, Ke-fa ^{[1
]}

机构：

[1] Zhejiang Univ, State Key Lab Clean Energy Utilizat, Hangzhou 310027, Peoples R China

来源：

COMBUSTION AND FLAME | 2009年 / 156卷 / 03期

基金：

国家高技术研究发展计划(863计划);

关键词：

Asymmetric flame; Soot volume fraction; Stereoscopic image system; Tomography system; EMISSION-SPECTROMETRY; REFRACTIVE-INDEX; DIFFUSION FLAME; RADIATION;

D O I：

10.1016/j.combustflame.2009.01.001

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The present study attempts to reconstruct soot temperature and volume fraction distributions for the asymmetric diffusive flame using a tomography technique. A high-resolution camera equipped with a stereo adapter was employed to capture stereoscopic flame images, which were used to obtain monochromatic line-of-sight flame emission projections within the visible range. A matrix-decomposition-based least squares algorithm was introduced to reconstruct the emission intensity distributions in the flame sections. The retrieved intensities were used to infer local soot temperature and volume fraction. Numerical assessments show that for soot volume fraction measurement, the system signal-to-noise ratio should be larger than 62.5 dB. The proposed tomography system was found to be capable of symmetric and asymmetric flame measurements. (C) 2009 The Combustion Institute. Published by Elsevier Inc. All rights reserved.

引用

页码：565 / 573

页数：9

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