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    Reduction of the droplet luminosity in the formaldehyde PLIF of acetone spray flame

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    Type
    Conference Paper
    Authors
    Sampath, Ramgopal cc
    Guiberti, Thibault cc
    Roberts, William L. cc
    Magnotti, Gaetano cc
    KAUST Department
    Clean Combustion Research Center
    Physical Science and Engineering (PSE) Division
    Mechanical Engineering Program
    Date
    2019-01-01
    Permanent link to this record
    http://hdl.handle.net/10754/666468
    
    Metadata
    Show full item record
    Abstract
    Formaldehyde planar laser-induced fluorescence (HCHO-PLIF) is performed in a spray flame of acetone in a canonical burner. The laser interaction with the acetone droplets results in the additional contribution that interferes with the HCHO-PLIF signal of interest and limits the applicability of the technique. The spectral analysis of the droplet interference contribution shows four intense peaks corresponding to the stimulated Raman scattering (SRS) of the vibrational stretch of C-H bond. In this paper, we show that by doping the acetone with Rhodamine 6G, the SRS contribution is greatly suppressed. Quantitative measurements of the SRS interference contribution on the HCHO-PLIF signal are presented for two different dye concentrations, over a wide range of laser pulse energies, and with different filters combinations.
    Sponsors
    This research was funded by King Abdullah University of Science and Technology (KAUST)
    Publisher
    Combustion Institute
    Conference/Event name
    12th Asia-Pacific Conference on Combustion, ASPACC 2019
    Additional Links
    http://www.combustionsociety.jp/aspacc19/program_final0711.html#CH0238
    Collections
    Conference Papers; Physical Science and Engineering (PSE) Division; Mechanical Engineering Program; Clean Combustion Research Center

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