F. Israel et al., SIMULTANEOUS MEASUREMENT OF DROPLET VELOCITY AND SIZE AND FLAME MANTLE TEMPERATURE BY PHASE DOPPLER ANEMOMETRY AND 2-COLOR PYROMETRY, Measurement science & technology, 6(6), 1995, pp. 727-741
Phase Doppler anemometry and a two-colour pyrometer have been combined
to provide simultaneous, local measurements of kerosene droplet veloc
ity and size and temperature of the burning soot mantle. Preliminary m
easurements within the flame brush that develops in the shear layer of
a swirl-stabilized, gas-supported kerosene flame with a swirl number
of about 0.19 and potential heat releases of 10.6 and 15.5 kW, respect
ively, are described. The results show that the maximum burning fracti
on of the droplets occurs adjacent to the region denoted as gas flame
but the value ranges between 20+/-5 and 40+/-5% depending on the axial
station, and decreases sharply across the shear layer. The flame mant
le temperature was found to be independent of droplet diameter, which
agrees with previous results in the literature. The likely experimenta
l errors are assessed in the context of the measurements in the swirl
burner.