DocumentCode :
559174
Title :
Wavenumber-frequency analysis of turbulent wall pressure fluctuations over a wide Reynolds number range of Turbulent Pipe Flows
Author :
Keith, William ; Foley, Alia ; Cipolla, Kimberly
Author_Institution :
Sensors & Sonar Syst. Dept., Naval Undersea Warfare Center, Newport, RI, USA
fYear :
2011
fDate :
19-22 Sept. 2011
Firstpage :
1
Lastpage :
5
Abstract :
Measurements of the autospectra and coherence of turbulent wall pressure fluctuations were made in the circular test section of the Quiet Water Tunnel Facility at the Naval Undersea Warfare Center in Newport, Rhode Island. The pipe diameter Reynolds numbers varied from 2.09 × 105 to 1.85 × 106. The coherence measurements are shown to collapse well with the similarity scaling over the entire range of Reynolds numbers. Wavenumber-frequency spectra are estimated by computing the spatial Fourier transform of the measured coherence, using the model of Corcos. The results are shown to accurately represent the convective ridge portion of the wavenumber-frequency spectra where the dominant energy exists.
Keywords :
Fourier transforms; boundary layer turbulence; computational fluid dynamics; flow measurement; fluctuations; fractals; pipe flow; Corcos model; Naval Undersea Warfare Center; Newport; Quiet Water Tunnel Facility; Reynolds number; Rhode Island; autospectra measurements; circular test section; convective ridge portion; pipe diameter; similarity; spatial Fourier transform; turbulent pipe flows; turbulent wall pressure fluctuations; wavenumber-frequency analysis; wavenumber-frequency spectra; Coherence; Fluctuations; Frequency measurement; Pressure measurement; Sensor arrays; Velocity measurement; pipe flow; turbulence; wavenumber frequency analsysis;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
OCEANS 2011
Conference_Location :
Waikoloa, HI
Print_ISBN :
978-1-4577-1427-6
Type :
conf
Filename :
6106964
Link To Document :
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