Refractive Indices of Overfire Soot in Large Buoyant Turbulent Diffusion Flames.
Refractive Indices of Overfire Soot in Large Buoyant
Turbulent Diffusion Flames.
Wu, J. S.; Krishnan, S. K.; Lin, K. C.; Faeth, G. M.
NISTIR 5904; October 1996.
National Institute of Standards and Technology. Annual
Conference on Fire Research: Book of Abstracts.
October 28-31, 1996, Gaithersburg, MD, 25-26 pp, 1996.
Sponsor:National Institute of Standards and Technology,
Available from: National Technical Information Service
Order number: PB97-153514
fire research; fire science; soot; turbulent flames;
Information about the optical properties of soot is
needed in order to develop reliable nonintrusive
measurements of soot physical properties and estimates
of soot radiation properties in flame environments.
Unfortunately, current estimates of soot optical
properties are limited by excessive uncertainties about
soot refractive indices. Motivated by this observation,
the objective of the present investigation was to
experimentally determine soot refractive indices at
visible wavelengths (350-800 nm). Soot in the overfire
region of buoyant turbulent diffusion flames in the long
residence time regime (where soot properties are
independent of position and residence time) was studied,
considering flames fueled with acetylene, propylene,
ethylene and propane burning in still air.