Open AccessThree-dimensional dynamic measurements of CH* and C2* concentrations in flame using simultaneous chemiluminescence tomography
Author(s) -
Ying Jin,
Yang Song,
Xiangju Qu,
Zhenhua Li,
Yunjing Ji,
Anzhi He
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.004640
Subject(s) - chemiluminescence , combustion , materials science , multispectral image , diffusion flame , optics , channel (broadcasting) , analytical chemistry (journal) , combustor , computer science , chemistry , chromatography , physics , telecommunications , organic chemistry , computer vision
The species concentrations of flame chemiluminescence play important role in combustion diagnostics, such as CH* and C2* of hydrocarbon flame, which can provide specific characteristics in combustion control and monitoring. In order to realize both CH* and C2* chemiluminescence intensity detection in propane-air diffusion flame simultaneously, we present three-dimensional dynamic flame detecting method for species concentration determination. Firstly, quantitative flame chemiluminescence multispectral separation technique based on color cameras coupled with double-channel bandpass filters is adopted for dual channel signal division. Next, flame chemiluminescence tomography combining with multi-directional simultaneous capturing is proposed for real time three dimensional observations and detection in flame. Moreover, the proposed technique can quantitatively provide comparison of species intensity between CH* and C2* for further analysis. Considering its credible detecting accuracy and simple requirements, it is believed the proposed technique can be widely used in combustion diagnostics.