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Turbulent pressure fluctuations in a long cylinder’s boundary layer in the longitudinal flow around it

Turbulent pressure fluctuations in a long cylinder’s boundary layer in the longitudinal flow... Abstract Frequency spectra of the turbulent pressure’s pulsations measurements have been performed in the low-noise wind tunnel on the extended cylinder’s surface during the longitudinal flow around it. The measurement results for frequency spectra caused by the integral contribution of all the pressure field’s modes as well as only the zero (ring) mode are presented. The obtained results are compared with other known experimental data. The longitudinal cross-spectra of the pressure field for the zero mode have been measured. With the help of Fourier transformation for the cross-spectra the analytical expressions for dimensional and dimensionless wavenumber-frequency spectrum of the zero mode have been obtained. The frequency-wave’s spectrum features considering large wavenumbers are discussed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Acoustical Physics Springer Journals

Turbulent pressure fluctuations in a long cylinder’s boundary layer in the longitudinal flow around it

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References (17)

Publisher
Springer Journals
Copyright
2010 Pleiades Publishing, Ltd.
ISSN
1063-7710
eISSN
1562-6865
DOI
10.1134/s106377101002017x
Publisher site
See Article on Publisher Site

Abstract

Abstract Frequency spectra of the turbulent pressure’s pulsations measurements have been performed in the low-noise wind tunnel on the extended cylinder’s surface during the longitudinal flow around it. The measurement results for frequency spectra caused by the integral contribution of all the pressure field’s modes as well as only the zero (ring) mode are presented. The obtained results are compared with other known experimental data. The longitudinal cross-spectra of the pressure field for the zero mode have been measured. With the help of Fourier transformation for the cross-spectra the analytical expressions for dimensional and dimensionless wavenumber-frequency spectrum of the zero mode have been obtained. The frequency-wave’s spectrum features considering large wavenumbers are discussed.

Journal

Acoustical PhysicsSpringer Journals

Published: Mar 1, 2010

Keywords: Acoustics

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