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Correlation of Simultaneously Measured Droplet Sizes and Velocities in nozzle sprays
Author(s) -
Bauckhage Klaus,
Floegel HansH.
Publication year - 1984
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/ppsc.19840010119
Subject(s) - nozzle , volume (thermodynamics) , photomultiplier , optics , flow (mathematics) , particle (ecology) , mechanics , materials science , spray characteristics , particle size , volumetric flow rate , spray nozzle , physics , chemistry , thermodynamics , geology , oceanography , detector
The application of a new LDA method which simultaneously measures the size and velocity of small water droplets in the spray cone of a fan type water nozzle is described. As the phase difference between adjacent photomultipliers responding to signals from a fringe mode LDA is linearly proportional to the diameter of the spherical particle in the measuring volume, the new instrument allows, for long distances between the optical devices and the measuring volume in the spray, non‐invasive measurements and from these the correlation of size and velocity of the individual droplet in order to establish two‐dimensional distributions. From the new LDA instrument one receives definite information about the volume‐flow concentration in the measuring point of an enclosed flow situation.