Abstract
Strategies employed for quantitative measurement by laser-induced
incandescence are detailed. Data are obtained for several laminar
diffusion flames formed from blended Diesel fuels of known
composition. A tomographic procedure is developed to scale the
two-dimensional data to soot volume fraction and to correct for the
trapping of signal by the soot field. Scaling is achieved by use of
laser extinction along the measurement plane. The findings are used
in discussions of measurement issues within turbulent
environments. Data are augmented with elastic scattering
measurements, allowing particle-size and number-density distributions
to be inferred. A degree of axial and radial similarity among
various flames suggests that the processes of soot formation and
oxidation occur over similar time scales for each fuel.
© 2000 Optical Society of America
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