Two-wavelength moiré deflection tomography in studying the dispersive characteristic for flame flow fields

Yun-yun Chen; Yang Song; An-zhi He; Zhen-hua Li

doi:10.1117/12.837439

24 November 2009 Two-wavelength moire deflection tomography in studying the dispersive characteristic for flame flow fields

Yun-yun Chen, Yang Song, An-zhi He, Zhen-hua Li

Author Affiliations +

Proceedings Volume 7513, 2009 International Conference on Optical Instruments and Technology: Optoelectronic Imaging and Process Technology; 751313 (2009) https://doi.org/10.1117/12.837439
Event: International Conference on Optical Instrumentation and Technology, 2009, Shanghai, China

Abstract

In this paper, the dispersive characteristic of flame flow fields is studied. Two-wavelength moire; deflection tomography is introduced to verify the dispersive characteristic for flame flow field, while 532nm and 808nm are chosen as the probe wavelengths. The combustion of propane in air is chosen as a practical example for theoretical and experimental investigation. The theories manifest that the dispersive capability of flame is determined by temperature, pressure, components as well as the probe wavelength, and the contribution of an electron which is one of the components of flame to the refractive index is nearly 10² or 10³ times that of a neutral particle in the given wavelength region. In short, the theoretical analysis and discussion match well with the experimental results.

Citation Download Citation

Yun-yun Chen, Yang Song, An-zhi He, and Zhen-hua Li "Two-wavelength moire deflection tomography in studying the dispersive characteristic for flame flow fields", Proc. SPIE 7513, 2009 International Conference on Optical Instruments and Technology: Optoelectronic Imaging and Process Technology, 751313 (24 November 2009); https://doi.org/10.1117/12.837439

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