TY - JOUR
T1 - Resolution-doubled one-dimensional wavelength modulation spectroscopy tomography for flame flatness validation of a flat-flame burner
AU - Liu, Chang
AU - Xu, Lijun
AU - Li, Fangyan
AU - Cao, Zhang
AU - Tsekenis, Stylianos A.
AU - McCann, Hugh
PY - 2015/6/11
Y1 - 2015/6/11
N2 - Flame flatness is one of the most critical factors in evaluating the performance of a flat-flame burner. In this paper, the flame flatness of a flat-flame burner is validated using a resolution-doubled one-dimensional wavelength modulation spectroscopy tomography (1D-WMST) technique that only uses one view of multiple parallel laser beams. When the interval of two neighboring parallel laser beams is Δr, a designed novel geometry of the parallel laser beams realizes a doubled tomographic resolution of Δr/2. Using the proposed technique, the distributions of temperature and H2O mole fraction in an axisymmetric premixed flame are simultaneously reconstructed and hence the flame flatness of a flat-flame burner can be validated. The flatness factor is quantitatively described by the similarity between the reconstructed and expected distributions of H2O mole fraction. For flat and non-flat flames, the experimental results agree well with the CFD simulation results, denoting that the resolution-doubled 1D-WMST technique provides a noninvasive, reliable and low cost way to validate the flame flatness of the flat-flame burner.
AB - Flame flatness is one of the most critical factors in evaluating the performance of a flat-flame burner. In this paper, the flame flatness of a flat-flame burner is validated using a resolution-doubled one-dimensional wavelength modulation spectroscopy tomography (1D-WMST) technique that only uses one view of multiple parallel laser beams. When the interval of two neighboring parallel laser beams is Δr, a designed novel geometry of the parallel laser beams realizes a doubled tomographic resolution of Δr/2. Using the proposed technique, the distributions of temperature and H2O mole fraction in an axisymmetric premixed flame are simultaneously reconstructed and hence the flame flatness of a flat-flame burner can be validated. The flatness factor is quantitatively described by the similarity between the reconstructed and expected distributions of H2O mole fraction. For flat and non-flat flames, the experimental results agree well with the CFD simulation results, denoting that the resolution-doubled 1D-WMST technique provides a noninvasive, reliable and low cost way to validate the flame flatness of the flat-flame burner.
UR - http://www.scopus.com/inward/record.url?scp=84938986069&partnerID=8YFLogxK
U2 - 10.1007/s00340-015-6150-9
DO - 10.1007/s00340-015-6150-9
M3 - Article
AN - SCOPUS:84938986069
SN - 0946-2171
VL - 120
SP - 407
EP - 416
JO - Applied Physics B: Lasers and Optics
JF - Applied Physics B: Lasers and Optics
IS - 3
ER -
