Accession Number:

ADA071048

Title:

Further Results on an Array Design to Measure the Wavenumber-Frequency Spectrum Beneath an Axisymmetric Turbulent Boundary Layer.

Descriptive Note:

Final rept.,

Corporate Author:

BINARY SYSTEMS INC SALIDA CO

Personal Author(s):

• Brooks,Lowell W.

Report Date:

1979-02-05

Pagination or Media Count:

75.0

Abstract:

This report describes the requirements on a flush mounted array designed to measure the wavenumber-frequency spectrum of the axisymmetric component of wall pressure beneath an axially towed cylinder. Measurement of the low wavenumber content is emphasized. The effect of the wavenumber spectral dynamic range as well as channel-to-channel amplitude, phase and position tolerances are evaluated. Author

Descriptors:

• *TURBULENT BOUNDARY LAYER
• *ACOUSTIC ARRAYS
• *ELECTROACOUSTIC TRANSDUCERS
• FREQUENCY
• TOWED ARRAYS
• CYLINDRICAL BODIES
• PRESSURE
• AXISYMMETRIC
• WALLS
• RINGS
• SPECTRUM ANALYSIS
• DYNAMIC RANGE

Subject Categories:

• Acoustic Detection and Detectors
• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE