Simultaneous OH and CH<sub>2</sub>O PLIF imaging of flame structures

Zhu Jiajian; Zhao Guoyan; Long Tiehan; Sun Mingbo; Li Qing; Liang Jianhan

doi:10.11729/syltlx20160026

Volume 30 Issue 5

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Zhu Jiajian, Zhao Guoyan, Long Tiehan, et al. Simultaneous OH and CH2O PLIF imaging of flame structures[J]. Journal of Experiments in Fluid Mechanics, 2016, 30(5): 55-60. doi: 10.11729/syltlx20160026

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Zhu Jiajian, Zhao Guoyan, Long Tiehan, et al. Simultaneous OH and CH₂O PLIF imaging of flame structures[J]. Journal of Experiments in Fluid Mechanics, 2016, 30(5): 55-60. doi: 10.11729/syltlx20160026

Zhu Jiajian, Zhao Guoyan, Long Tiehan, et al. Simultaneous OH and CH2O PLIF imaging of flame structures[J]. Journal of Experiments in Fluid Mechanics, 2016, 30(5): 55-60. doi: 10.11729/syltlx20160026

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Simultaneous OH and CH₂O PLIF imaging of flame structures

doi: 10.11729/syltlx20160026

Science and Technology on Scramjet Laboratory, National University of Defense Technology, Changsha 410073, China

Received Date: 2016-01-30
Rev Recd Date: 2016-05-22
Publish Date: 2016-10-25

Abstract

Abstract

Simultaneous OH and CH₂O Planar Laser-Induced Fluorescence (PLIF) imaging plays an important role in studying flame structures and two-dimensional distribution of intermediate species in combustion. The OH distribution is used to represent the reaction zone structure of flames, whereas CH₂O is employed to show the pre-heating zone structure of flames. Flame structures of a CH₄/air partially premixed flame were investigated using simultaneous OH and CH₂O planar laser-induced fluorescence (PLIF) imaging. Experimental methods, including experimental system, optic alignment, synchronization scheme, excitation scan of OH A-X(1, 0), data collection and analysis, are discussed. Experimental results suggest that simultaneous OH and CH₂O PLIF imaging can show different instantaneous structures of reaction zones and preheating zones in the CH₄/air partially premixed flame. New separated preheating zones are locally generated due to the merge of the reaction zone between two adjacent areas.
- Planar Laser-Induced Fluorescence,
- laser-induced fluorescence,
- laser combustion diagnostics,
- flame reaction zone,
- flame preheating zone

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References(19)

References

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