Spectral Analysis of Pulsations in Flow Velocity Measured by an Acoustic Anemometer

Spectral Analysis of Pulsations in Flow Velocity Measured by an Acoustic Anemometer

The velocities of a gas-air flow measured by an acoustic anemometer, understood as a random process, are investigated. Such random components of the anemometer error as the measurement error and turbulent pulsations of the air flow are considered and their spectral composition is investigated. An ex...

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Veröffentlicht in:Measurement techniques 2004-04, Vol.47 (4), p.385-388
Hauptverfasser: Shkundin, S. Z., Buyanov, S. I., Rumyantseva, V. A.
Format: Artikel
Sprache:eng
Schlagworte:
Acoustic measurement
Acoustics
Air flow
Anemometers
Error analysis
Flow velocity
Inertial
Pulsation
Spectra
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Zusammenfassung:The velocities of a gas-air flow measured by an acoustic anemometer, understood as a random process, are investigated. Such random components of the anemometer error as the measurement error and turbulent pulsations of the air flow are considered and their spectral composition is investigated. An experimentally obtained transient response of the acoustic anemometer along with a theoretical expression of the response in an approximation of the unit-step function by an inertial unit are presented.[PUBLICATION ABSTRACT]
ISSN:0543-1972
1573-8906
DOI:10.1023/B:METE.0000033696.91400.ea