TY - GEN
T1 - Reduction of the droplet luminosity in the formaldehyde PLIF of acetone spray flame
AU - Sampath, Ramgopal
AU - Guiberti, Thibault
AU - Roberts, William L.
AU - Magnotti, Gaetano
N1 - KAUST Repository Item: Exported on 2022-02-17
Acknowledgements: This research was funded by King Abdullah University of Science and Technology (KAUST)
PY - 2019/1/1
Y1 - 2019/1/1
N2 - 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.
AB - 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.
UR - http://hdl.handle.net/10754/666468
UR - http://www.combustionsociety.jp/aspacc19/program_final0711.html#CH0238
UR - http://www.scopus.com/inward/record.url?scp=85083950211&partnerID=8YFLogxK
M3 - Conference contribution
BT - 12th Asia-Pacific Conference on Combustion, ASPACC 2019
PB - Combustion Institute
ER -