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Noise response of cavities of varying dimensions at subsonic speeds
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Block, P. J. W. |
| Copyright Year | 1976 |
| Description | An expression for the Strouhal number of lengthwise cavity oscillations is obtained which includes the effect of length-to-depth ratio. This expression, which agrees well with the experimental data, is also used to predict the Mach number at which cavity acoustic response is maximum. Interaction between lengthwise and depthwise modes is seen to occur at Mach numbers from 0.1 to 0.5. Cavity shape is shown to affect the noise spectra in generating either a broadband or narrowband signal. |
| File Size | 3807998 |
| Page Count | 36 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19770007874 |
| Archival Resource Key | ark:/13960/t0cv99417 |
| Language | English |
| Publisher Date | 1976-12-01 |
| Access Restriction | Open |
| Subject Keyword | Acoustics Cavities Airframes Subsonic Flow Strouhal Number Pressure Oscillations Aerodynamic Noise Sound Generators Noise Spectra Mach Number Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
