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One-dimensional ful...
One-dimensional full-range mixture fraction measurements with femtosecond laser-induced plasma spectroscopy
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- Li, Bo (author)
- Tianjin University
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- Zhang, Dayuan (author)
- Tianjin University
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- Gao, Qiang (author)
- Tianjin University
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- Li, Zhongshan (author)
- Lund University,Lunds universitet,Förbränningsfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Combustion Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,Tianjin University
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(creator_code:org_t)
- 2020-01-14
- 2020
- English.
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In: Experiments in Fluids. - : Springer Science and Business Media LLC. - 0723-4864 .- 1432-1114. ; 61:2
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http://dx.doi.org/10...
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Abstract
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- Abstract: Femtosecond laser-induced plasma spectroscopy (FLIPS) was performed to achieve full-range mixture fraction measurements in non-reacting CH4/air flow fields. A femtosecond laser at 800 nm was used to generate a plasma channel with a uniform intensity distribution. Through measuring spatially resolved spectra and calibration, we found that the spectral intensity ratios of CH (431 nm)/N2 (337 nm), CH (431 nm)/N2 (357 nm), C2 (516.5 nm)/N2 (337 nm), C2 (516.5 nm)/N2 (357 nm) and CH (431 nm)/O (777 nm) could be used to realize mixture fraction measurements, and the first four intensity ratios can achieve full-range mixture fraction measurements. Furthermore, through quantitative analysis of the distribution along the plasma channel, we analyzed the one-dimensional measurement capability of FLIPS. The main advantages of FLIPS for mixture fraction measurements are one-dimensional quantitative measurement, full-range measurement, high spatial resolution and no Bremsstrahlung interference. Graphic abstract: [Figure not available: see fulltext.].
Subject headings
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
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