Temperature and Density Distribution Measurement of Flame by Using Moiré Deflection Tomography

Yunyun, 陈云云 Chen; Yang, 宋旸 Song; Anzhi, 贺安之 He; Zhenhua, 李振华 Li

doi:10.3788/aos20082812.2330

Cited by 3 publications

(1 citation statement)

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“…Moire ´deflectometry has been widely used in flame diagnosis; 2,[13][14][15][16][17] its applicability to arc plasma diagnosis has also been studied recently. 18) Hence, a flame and an arc plasma are chosen as two typical examples for comparative experiment.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Fringe Displacement in Moiré Deflection Tomography Diagnosis between Flame and Arc Plasma

Chen

Song

et al. 2011

Jpn. J. Appl. Phys.

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In this paper, an interesting optical phenomenon in flow fields' moiré deflection tomography diagnosis is presented. A flame and an arc plasma are chosen as two practical examples for comparative study, and 532 nm is chosen as the probe wavelength. The experimental results indicate that a higher temperature does not mean a larger moiré fringe displacement, which makes us realize that the refractive index gradient is not only determined by the temperature gradient of a flow field. The physical essence, that is, what determines a flow field's refractive index gradient, is proposed theoretically. The experimental phenomenon can be well explained using the theoretical analysis model, which implies the rationality of the physical essence proposed by us.

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Section: Introductionmentioning

confidence: 99%

Comparison of Fringe Displacement in Moiré Deflection Tomography Diagnosis between Flame and Arc Plasma

Chen

Song

et al. 2011

Jpn. J. Appl. Phys.

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Extension of the Gladstone-Dale equation for flame flow field diagnosis by optical computerized tomography

Chen

Song

et al. 2009

Appl. Opt.

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An extended model of the original Gladstone-Dale (G-D) equation is proposed for optical computerized tomography (OCT) diagnosis of flame flow fields. For the purpose of verifying the newly established model, propane combustion is used as a practical example for experiment, and moiré deflection tomography is introduced with the probe wavelength 808 nm. The results indicate that the temperature based on the extended model is more accurate than that based on the original G-D equation. In a word, the extended model can be suitable for all kinds of flame flow fields whatever the components, temperature, and ionization are.

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Comparison of Fringe Displacement in Moiré Deflection Tomography Diagnosis between Flame and Arc Plasma

Chen¹,

Song²,

Li³

et al. 2011

Jpn. J. Appl. Phys.

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Temperature and Density Distribution Measurement of Flame by Using Moiré Deflection Tomography

Cited by 3 publications

References 0 publications

Comparison of Fringe Displacement in Moiré Deflection Tomography Diagnosis between Flame and Arc Plasma

Comparison of Fringe Displacement in Moiré Deflection Tomography Diagnosis between Flame and Arc Plasma

Extension of the Gladstone-Dale equation for flame flow field diagnosis by optical computerized tomography

Comparison of Fringe Displacement in Moiré Deflection Tomography Diagnosis between Flame and Arc Plasma

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