Particle size and velocity measurement in flames by laser anemometerSimultaneous droplet size and velocity measurements by a particle counting Laser Doppler Anemometer (LDA) in kerosene fuel sprays under burning and non-burning conditions are presented. Particle sizes are derived from pulse height analysis of the mean LDA signals and velocities are simultaneously determined by measuring Doppler shift frequencies. The measurements show that droplet velocity is a function of droplet diameter for burning and non-burning conditions, and spatially averaged size distributions are derived from velocity data. A comparison of results obtained under burning and non-burning conditions show changes in size distribution due to preferential vaporization of small droplets, acceleration due to thermal expansion of gases, and corresponding changes in droplet momentum.
Document ID
19800027597
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Chigier, N. A. (Sheffield Univ. United Kingdom)
Ungut, A. (Sheffield Univ. United Kingdom)
Yule, A. J. (Sheffield, University Sheffield, United Kingdom)