Fuel: Ethylene/N2
Oxidizer: Air
Fuel velocity: 35 cm/s (cold-flow velocity)
Oxidizer velocity: 35 cm/s (cold-flow velocity)
Recommended T boundary condition: see BC80.txt below.
Recommended computational domain: At least 12 cm above the fuel tube exit plane and at least 7.5 cm in the radial direction. At least 15,000 non-equispaced control volumes with careful attention paid to grid independence, tolerance independence, and domain length independence.
The data is in a tab delimited, formatted text file, consisting of a two-dimensional array of floating point values. The matrix represents an image with pixel spacing of 0.1 mm (10 pixels/mm). The first element of the matrix corresponds to the value in the upper left corner of the images shown. This type of data can be read in directly to Matlab using the 'load' command.
Oxidizer: Air
Fuel velocity: 35 cm/s (cold-flow velocity)
Oxidizer velocity: 35 cm/s (cold-flow velocity)
Recommended T boundary condition: see BC80.txt below.
Recommended computational domain: At least 12 cm above the fuel tube exit plane and at least 7.5 cm in the radial direction. At least 15,000 non-equispaced control volumes with careful attention paid to grid independence, tolerance independence, and domain length independence.
The data is in a tab delimited, formatted text file, consisting of a two-dimensional array of floating point values. The matrix represents an image with pixel spacing of 0.1 mm (10 pixels/mm). The first element of the matrix corresponds to the value in the upper left corner of the images shown. This type of data can be read in directly to Matlab using the 'load' command.
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Soot Temperature
based on color ratio pyrometry using a Nikon D90 camera. Data
was published in Ref. 6. Here, soot optical properties were
assumed to be constant throughout the flame with the emissivity
varying with wavelength to the -1.38 power. The data array size is 901 x 201. T80D90.txt |
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Soot Volume Fraction based on
color ratio pyrometry using a Nikon D90 camera. Data was
published in Ref. 6. Here, soot optical properties were
assumed to be constant throughout the flame with the
emissivity varying with wavelength to the -1.38 power.
The data array size is 901 x 201. Fv80D90.txt |
 |
Soot Volume
Fraction based on LII and calibrated using absorption. Data was
published in Refs 3-6. Soot optical properties were assumed to
be constant throughout the flame with Kext = 8.6. The data array size is 901 x 201. Fv80LII.txt |
 |
Soot Temperature based on color ratio
pyrometry using a Nikon D300s camera. Data was published in Ref.
11. Here, soot optical properties were NOT assumed to be
constant throughout the flame. Instead, the wavelength
dependence of spectral emissivity was determined in two
dimensions using data from 2D multi-angle light scattering,
spectrally resolved line of sight attenuation, and time-resolved
LII. The so-called "dispersion exponent" was found to ~2 at
upstream locations where the young soot is formed and is as
small as ~0.9 on the wings of the flame where the soot is more
mature. The data array size is 1000 x 200. SootTemp80.txt |
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The effective radius of gyration of
mature soot aggregates was measured using multi-angle light
scattering (MALS) at 532 nm. The experiment was detailed and
published in Ref. 13. The effective radius of gyration is a
function of aggregate size and polydispersity. The data array size is 900 x 200. Rg_eff_80.txt |
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80% flame
near-burner temperature. The experiment was detailed and
published in Ref. 14. The data array size is 2 x 60 (r [mm], T [K]). BC80.txt |