FFT method of dynamic light scattering for particle size diagnostics in luminous flames
Time correlation spectroscopy was used to measure the size of luminous particles, in situ, in wick flames and in candle flames containing particle sizes for which little information has been available. The time correlation function of scattered light from the particle in the scattering volume is related to diffusion due to the micro-Brownian motion of the particles. The fluctuation term directly related to the dynamic light scattering was emphasized by improving the observation system. The particle diffusion constants in the luminous area of kerosene lamp and candle flames were about 9-12 x 10 to the -9th and 5-8 x 10 to the -9th sq m/sec, respectively. The particle size estimation can be related to the diffusion constant using kinetic or hydrodynamic relations.
- Research Organization:
- Tokyo Univ. of Agriculture and Tech., Japan
- OSTI ID:
- 7022951
- Journal Information:
- Combust. Flame; (United States), Vol. 53
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
FLAMES
PARTICLE SIZE
DIFFUSION
EMISSION SPECTROSCOPY
FOURIER TRANSFORMATION
LASER SPECTROSCOPY
LIGHT SCATTERING
SOOT
INTEGRAL TRANSFORMATIONS
SCATTERING
SIZE
SPECTROSCOPY
TRANSFORMATIONS
400800* - Combustion
Pyrolysis
& High-Temperature Chemistry