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Sizing Large Hollow Micro‐Balloons with the phase doppler interferometer
Author(s) -
Sankar Subramanian V.,
Kamemoto Derek Y.,
Bachalo William D.
Publication year - 1993
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.19930100606
Subject(s) - sizing , glass microsphere , microsphere , materials science , doppler effect , interferometry , phase (matter) , optics , polystyrene , composite material , physics , chemistry , engineering , chemical engineering , polymer , organic chemistry , quantum mechanics , astronomy
A combined theoretical and experimental study has been conducted to evaluate the effectiveness of using large, hollow micro‐balloons as LDV seed particles. The study has focused on the ability of phase Doppler systems to size hollow microballoons, the ability of large micro‐balloons to respond to high frequency spatial and temporal flow field variations, and the overall advantages and disadvantages of using large microballoons instead of conventional LDV seed particles, such as very small water droplets or polystyrene latex (PSL) particles. This paper discusses the development of a theoretical phase Doppler response model for stratified spheres, the experimental facility, and the theoretical and experimental results.