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Accuracy of Phase‐Doppler Anemometry in the Presence of Flames
Author(s) -
Tsushima Shohji,
Akamatsu Fumiteru,
Katsuki Masashi,
Mizutani Yukio,
Cho YongDae
Publication year - 1997
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.199700049
Subject(s) - bunsen burner , optics , combustion , phase (matter) , laser doppler velocimetry , optical path , combustor , laser , refractive index , materials science , doppler effect , particle size , displacement (psychology) , chemistry , physics , psychotherapist , medicine , psychology , blood flow , organic chemistry , astronomy
The objectives of the present study were to clarify the influence of flames on phase‐Doppler anemometry (PDA) and to consider quantitatively the accuracy of measured sizes and velocities using a known‐size polystyrene particle and a Bunsen burner placed in the optical path in PDA simulating the variation of refractive index in a combusting field. It was found that fluctuations of a flame had some influence on the measurement, especially on size, while the velocities obtained in these experiments showed little influence of the flame. Furthermore, a compensation procedure for the error was discussed by comparing the scattered data in size measurement with the displacement of incident laser beams. As a result, it was found that the displacement of the laser beams can be related to the degree of errors caused by the influence of a flame on the optical path in PDA.