TY - JOUR
T1 - Simultaneous Measurement of Volocity and Size of Flowing Particles
T2 - (Detection of Phase Shift of Doppler Signals by Fast Digital Processor)
AU - Hishida, Koichi
AU - Kobashi, Kazuhiro
AU - Sanai, Naritoshi
AU - Maeda, Masanobu
PY - 1989
Y1 - 1989
N2 - The present processing system was designed to measure size and velocity of particles in dense two-phase flows. A fast Fourier transform method was adopted to detect not only Doppler frequencies but also phase shifts of Doppler signals, where a particle size was proportional to the phase difference of Doppler signals observed by photodetectors at different positions. A fast digital signal processor was employed for the high speed calculation of FFT processing. The transmitting and receiving optical systems of the present LDV was constructed by fiber optics to stabilize and compact it. The present system provided a high accuracy in measurements of particle velocity and size for noisy signals.
AB - The present processing system was designed to measure size and velocity of particles in dense two-phase flows. A fast Fourier transform method was adopted to detect not only Doppler frequencies but also phase shifts of Doppler signals, where a particle size was proportional to the phase difference of Doppler signals observed by photodetectors at different positions. A fast digital signal processor was employed for the high speed calculation of FFT processing. The transmitting and receiving optical systems of the present LDV was constructed by fiber optics to stabilize and compact it. The present system provided a high accuracy in measurements of particle velocity and size for noisy signals.
KW - Digital Signal Processor
KW - Flow Measurements
KW - Laser Velocimetry
KW - Multiphase Flow
KW - Optical Measurements
KW - Particle Sizing
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U2 - 10.1299/kikaib.55.80
DO - 10.1299/kikaib.55.80
M3 - Article
AN - SCOPUS:0024482023
SN - 0387-5016
VL - 55
SP - 80
EP - 85
JO - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
JF - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
IS - 509
ER -