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In-Won Lee, H. Sung (2002)
Multiple-arrayed pressure measurement for investigation of the unsteady flow structure of a reattaching shear layerJournal of Fluid Mechanics, 463
Gauthier Fauchet, Jean-Pierre Bertoglio (1999)
Régimes pseudo-son et acoustique en turbulence compressibleComptes Rendus De L Academie Des Sciences Serie Ii Fascicule B-mecanique Physique Astronomie, 327
G. Corcos (1964)
The structure of the turbulent pressure field in boundary-layer flowsJournal of Fluid Mechanics, 18
G Fauchet, JP Bertoglio (1999)
Regimes pseudo-son et acoustique en turbulence compressibleC R Acad Sci Paris t 327 Serie, IIb
C. Maury, P. Gardonio, S. Elliott (2002)
A WAVENUMBER APPROACH TO MODELLING THE RESPONSE OF A RANDOMLY EXCITED PANEL, PART II: APPLICATION TO AIRCRAFT PANELS EXCITED BY A TURBULENT BOUNDARY LAYERJournal of Sound and Vibration, 252
R. Camussi, G. Guj, D. Barbagallo, D. Prischich (2000)
Experimental characterization of the aeroacoustic behavior of a low speed wind tunnel
I Lee, HJ Sung (2001)
Characteristics of wall pressure fluctuations in separated flows over a backward-facing step: Part II. Unsteady wavelet analysisExp Fluids, 30
D. Chase (1980)
Modeling the wavevector-frequency spectrum of turbulent boundary layer wall pressureJournal of Sound and Vibration, 70
L. Hudy, A. Naguib, W. Humphreys (2003)
Wall-pressure-array measurements beneath a separating/reattaching flow regionPhysics of Fluids, 15
T. Farabee (1986)
An experimental investigation of wall pressure fluctuations beneath non-equilibrium turbulent flows
H. Hubbard (1956)
Some Experiments Related to the Noise from Boundary LayersJournal of the Acoustical Society of America, 28
M. Bull (1996)
WALL-PRESSURE FLUCTUATIONS BENEATH TURBULENT BOUNDARY LAYERS: SOME REFLECTIONS ON FORTY YEARS OF RESEARCHJournal of Sound and Vibration, 190
P. Bradshaw (1967)
‘Inactive’ motion and pressure fluctuations in turbulent boundary layersJournal of Fluid Mechanics, 30
T. Brungart, G. Lauchle, S. Deutsch, Eric Riggs (2002)
Wall pressure fluctuations induced by separated/reattached channel flowJournal of Sound and Vibration, 251
F. Fricke, D. Stevenson (1968)
Pressure Fluctuations in a Separated Flow RegionJournal of the Acoustical Society of America, 44
D. Leclercq, X. Bohineust (2002)
INVESTIGATION AND MODELLING OF THE WALL PRESSURE FIELD BENEATH A TURBULENT BOUNDARY LAYER AT LOW AND MEDIUM FREQUENCIESJournal of Sound and Vibration, 257
B. Efimtsov, N. Kozlov, S. Kravchenko, A. Andersson (1999)
Wall pressure-fluctuation spectra at small forward-facing steps
I-Ting Lee, H. Sung (2001)
Characteristics of wall pressure fluctuations in separated flows over a backward-facing step: Part II. Unsteady wavelet analysisExperiments in Fluids, 30
JS Bendat, AG Piersol (1986)
Random data: analysis and measurements procedures
A. Smol’yakov, V. Tkachenko, J. Wood (1991)
Models of a field of pseudoacoustic turbulent wall pressures and experimental dataSoviet physics. Acoustics, 37
V. Brederode, P. Bradshaw (1974)
Influence of the Side Walls on the Turbulent Center-Plane Boundary-Layer in a Square DuctJournal of Fluids Engineering-transactions of The Asme, 100
D. Crighton, A. Dowling, J. Williams, M. Heckl, F. Leppington (1992)
Noise Source Mechanisms
Y. Na, P. Moin (1998)
The structure of wall-pressure fluctuations in turbulent boundary layers with adverse pressure gradient and separationJournal of Fluid Mechanics, 377
D. Leclercq, Marc Jacob, Alain Louisot, C. Talotte (2001)
Forward-backward facing step pair - Aerodynamic flow, wall pressure and acoustic characterisation
R. Camussi, G. Guj, A. Ragni (2006)
Wall pressure fluctuations induced by turbulent boundary layers over surface discontinuitiesJournal of Sound and Vibration, 294
D. Crighton, A. Dowling, J. Ffowcs‐Williams, M. Heckl, F. Leppington, J. Bartram (1992)
Modern Methods in Analytical Acoustics: Lecture Notes
M. Goody, R. Simpson, C. Chesnakas (2000)
Separated Flow Surface Pressure Fluctuations and Pressure-Velocity Correlations on Prolate SpheroidAIAA Journal, 38
BM Efimtsov (1986)
Vibrations of a cylindrical panel in a field of turbulent pressure fluctuationsSov Phys Acoust, 32
M. Howe (1998)
On the contribution from skin steps to boundary-layer generated interior noiseJournal of Sound and Vibration, 209
F. Fahy, C. Morfey (1989)
Mechanics of flow-induced sound and vibrationJournal of Sound and Vibration, 129
G. Lauchle, W. Kargus (2000)
Scaling of turbulent wall pressure fluctuations downstream of a rearward facing step.The Journal of the Acoustical Society of America, 107 1
Wall pressure fluctuations generated by turbulent boundary layers over a shallow cavity are studied experimentally in a low-speed wind tunnel facility. The scope of the present work is to characterize the propagation of the pressure perturbations at the wall by means of pressure cross-correlations and cross-spectra measured through a microphone pair translated along the cavity floor. It is found that the mechanism characterizing the pressure propagation close to the backward facing step and in the middle of the cavity is similar to what is commonly observed in equilibrium boundary layer being the convection velocity smaller than the external mean velocity. On the other hand, in the close vicinity of the forward-step, the hydrodynamic contribution of the pressure fluctuations is accompanied by a relevant acoustic effect characterized by a convection velocity close to the speed of sound. Furthermore, in the regions close to the two steps, the spectral decay of the coherence function, even though of exponential type, is faster than that obtained in the quasi-equilibrium region.
Experiments in Fluids – Springer Journals
Published: Jan 13, 2006
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