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Propagation of sound through a sheared flow
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Karamcheti, K. Woolley, J. P. Smith, C. A. |
| Copyright Year | 1978 |
| Description | Sound generated in a moving fluid must propagate through a shear layer in order to be measured by a fixed instrument. These propagation effects were evaluated for noise sources typically associated with single and co-flowing subsonic jets and for subcritical flow over airfoils in such jets. The techniques for describing acoustic propagation fall into two categories: geometric acoustics and wave acoustics. Geometric acoustics is most convenient and accurate for high frequency sound. In the frequency range of interest to the present study (greater than 150 Hz), the geometric acoustics approach was determined to be most useful and practical. |
| File Size | 2727290 |
| Page Count | 83 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19780025933 |
| Archival Resource Key | ark:/13960/t0cv99m1h |
| Language | English |
| Publisher Date | 1978-08-01 |
| Access Restriction | Open |
| Subject Keyword | Acoustics Sound Propagation Jet Aircraft Noise Shear Flow Flow Distribution Computerized Simulation High Frequencies Flow Geometry Noise Measurement 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 |
