High-Speed LIF Imaging for Cycle-Resolved Formaldehyde Visualization in HCCI Combustion

Olofsson, Jörgen; Seyfried, Hans; Richter, Mattias; Aldén, Marcus; Vressner, Andreas; Hultqvist, Anders; Johansson, Bengt; Lombaert, Karine

doi:10.4271/2005-01-0641

Cited by 12 publications

(2 citation statements)

References 16 publications

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“…The fluorescence obtained with 355 nm excitation in this engine, operated at similar conditions, has also been studied with a spectrometer, and the spectral signature of formaldehyde could be identified. 32…”

Section: High-resolution Excitation Scan Of Formaldehydementioning

confidence: 99%

Strategies for Formaldehyde Detection in Flames and Engines Using a Single-Mode Nd:YAG/OPO Laser System

Brackmann

Rupiński

et al. 2005

Appl Spectrosc

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This paper presents technical developments for the detection of formaldehyde (CH2O) using laser-induced fluorescence. The easily accessible third harmonic of the Nd:YAG laser at 355 nm was used for excitation of formaldehyde. In order to investigate potential background fluorescence, e.g., from large molecules such as polyaromatic hydrocarbons, special attention was paid to investigating the possibility of scanning the wavelength of a single-mode Nd:YAG laser under the gain profile, approximately 3 cm(-1), on and off resonance. Furthermore, a technique for simultaneous detection of formaldehyde and OH using one laser system is presented. The single-mode Nd: YAG laser at 355 nm in combination with an optical parametric oscillator (OPO) laser tuned to 283 nm was used for simultaneous two-dimensional imaging of both species using one charge-coupled device (CCD) detector equipped with a dual filter image separator. The techniques are demonstrated with measurements in laboratory flames and the combined measurements are also demonstrated in an engine.

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Section: High-resolution Excitation Scan Of Formaldehydementioning

confidence: 99%

Strategies for Formaldehyde Detection in Flames and Engines Using a Single-Mode Nd:YAG/OPO Laser System

Brackmann

Rupiński

et al. 2005

Appl Spectrosc

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show abstract

“…In general, 2D imaging of a semitransparent medium is relatively easy to perform by the use of laser sheet optics, which simultaneously can also provide good spatial and temporal resolution. Particulary for combustion research, this approach is commonly used, e.g., for cycled-resolved fuel visualization in engines [4] or in gas turbines [5]. However, in order to achieve this, two-way optical access is needed.…”

Section: Introductionmentioning

confidence: 99%

Spatially resolved, single-ended two-dimensional visualization of gas flow phenomena using structured illumination

Kristensson¹,

Richter²,

Pettersson³

et al. 2008

Appl. Opt.

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Ultra-high speed imaging and OH-LIF study of DMF and MF combustion in a DISI optical engine

Jiang

et al. 2014

Applied Energy

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High-Speed LIF Imaging for Cycle-Resolved Formaldehyde Visualization in HCCI Combustion

Cited by 12 publications

References 16 publications

Strategies for Formaldehyde Detection in Flames and Engines Using a Single-Mode Nd:YAG/OPO Laser System

Strategies for Formaldehyde Detection in Flames and Engines Using a Single-Mode Nd:YAG/OPO Laser System

Spatially resolved, single-ended two-dimensional visualization of gas flow phenomena using structured illumination

Ultra-high speed imaging and OH-LIF study of DMF and MF combustion in a DISI optical engine

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