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Particle Sizing by Planar-Phase Doppler System (1994)

AIZU, Yoshihisa ; WASHIYAMA, Hiroyuki ; MISHINA, Hiromichi

Springer

Optical review 1 (1994), S. 121-124

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ISSN: 1349-9432

Keywords: particle sizing ; phase Doppler anemometry ; velocity measurements ; trajectory ambiguity ; generalized Lorenz-Mie theory

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract Conventional phase Doppler systems are useful for sizing particles in the order of microns, but sensitive to the Gaussian beam defect which can cause sizing errors. The defect can be significant when a large size is measured. In this paper, we present a new phase Doppler system using a planar optical layout which permits large particles to be measured in a forward scattering scheme without the Gaussian beam errors. The optical system design is discussed by numerical simulation based on the Mie theory.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/s10043-994-0121-4

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New Generation of Phase-Doppler Instruments for particle velocity, size and concentration measurements (1994)

Aizu, Yoshihisa ; Domnick, Joachim ; Durst, Franz ; [et al.]

Weinheim : Wiley-Blackwell

Particle and Particle Systems Characterization 11 (1994), S. 43-54

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ISSN: 0934-0866

Keywords: Chemistry ; Industrial Chemistry and Chemical Engineering

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Process Engineering, Biotechnology, Nutrition Technology

Notes: Phase-Doppler anemometry (PDA) is applied for particle size, velocity and concentration measurements in two-phase or multi-phase flows of ever increasing complexity. For accurate measurements the experimenter must be provided with software and hardware which permit an optimal layout of the PDA optics for a given application, reliable detection of signals over a wide particle diameter range, accurate determination of particle concentration and precise discrimination between particles of different composition. Recent work at LSTM, Erlangen, has been directed to developing a complete PDA package for the above purposes. Progress in this direction is summarized in this paper.

Additional Material: 12 Ill.