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Recording the Frequency Spectrum of Near-Wall Turbulent Pressures on an Acoustic Noise Background

Recording the Frequency Spectrum of Near-Wall Turbulent Pressures on an Acoustic Noise Background The paper considers the problem of recording the spectral components of the frequency spectrum of near-wall turbulent pressures under the effect of acoustic noise. The previously proposed method for measuring pressure fluctuations on an acoustic noise background uses a two-element pressure transducer that wave-filters the measured turbulent fluctuation field. Here, we analytically investigate the wave properties of a two-element transducer in the turbulent pressures field. With proper selection of the characteristics, the proposed pressure fluctuation receiver, due to its wave properties, can cut off the acoustic noise contribution to the measurement results. The parameters and relations determining the conditions for efficient acoustic noise suppression are established. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Acoustical Physics Springer Journals

Recording the Frequency Spectrum of Near-Wall Turbulent Pressures on an Acoustic Noise Background

Acoustical Physics , Volume 66 (6) – Feb 5, 2021

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References (13)

Publisher
Springer Journals
Copyright
Copyright © Pleiades Publishing, Ltd. 2020. ISSN 1063-7710, Acoustical Physics, 2020, Vol. 66, No. 6, pp. 633–638. © Pleiades Publishing, Ltd., 2020. Russian Text © The Author(s), 2020, published in Akusticheskii Zhurnal, 2020, Vol. 66, No. 6, pp. 632–637.
ISSN
1063-7710
eISSN
1562-6865
DOI
10.1134/S1063771020050073
Publisher site
See Article on Publisher Site

Abstract

The paper considers the problem of recording the spectral components of the frequency spectrum of near-wall turbulent pressures under the effect of acoustic noise. The previously proposed method for measuring pressure fluctuations on an acoustic noise background uses a two-element pressure transducer that wave-filters the measured turbulent fluctuation field. Here, we analytically investigate the wave properties of a two-element transducer in the turbulent pressures field. With proper selection of the characteristics, the proposed pressure fluctuation receiver, due to its wave properties, can cut off the acoustic noise contribution to the measurement results. The parameters and relations determining the conditions for efficient acoustic noise suppression are established.

Journal

Acoustical PhysicsSpringer Journals

Published: Feb 5, 2021

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