Wavevector-Frequency Spectrum of Transition Zone Wall Pressure Fluctuations.

Josserand, M. A.; Lauchle, G. C.

Wavevector-Frequency Spectrum of Transition Zone Wall Pressure Fluctuations.

Active / Technical Report | Accession Number: ADA176655 |

Abstract:

The laminar to turbulent transition zone continues to be of interest from the flow noise point of view. A theoretical model was developed to predict the radiated component wavenumber less than or equal to the sonic wavenumber of the pressure fluctuations that occur in this zone. It is also recognized that wavenumbers greater than the sonic wavenumber are also important because pressure fluctuations at these higher wavenumbers may couple with structural vibrations. Keywords flow noise turbulence, pressure fluctuations boundary layer transition theoretical experimental spectrum.

Author(s):

Josserand, M. A. ; Lauchle, G. C.

Author Organization(s):

PENNSYLVANIA STATE UNIV UNIVERSITY PARK APPLIED RESEARCH LAB

Descriptive Note:

Doctoral thesis,

Pagination:

0184

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:

Approved For Public Release

RECORD

Collection: TR

Identifying Numbers

Report Number(s):

ARL/PSU/TR-86-008

Subject Terms

Joint Capability Areas:

JCA_6.3.3_Spectrum Management

Communities of Interest:

No COI(s) Identified

Descriptor(s):

*FLOW NOISE, *BOUNDARY LAYER TRANSITION, RADIATION, VIBRATION, MODELS, STRUCTURAL PROPERTIES, THEORY, AUTOCORRELATION, BOUNDARY LAYER, TURBULENCE, WALLS, TRANSISTORS, VARIABLE PRESSURE

Field(s)/Group(s):

Acoustics, Fluid Mechanics

Keyword(s):

Chase Model

Report Date:

1986 Dec 01