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Effects of high subsonic flow on sound propagation in a variable-area duct
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Myers, M. K. Callegari, A. J. |
| Copyright Year | 1976 |
| Description | The propagation of sound in a converging-diverging duct containing a quasi-one-dimensional steady flow with a high subsonic throat Mach number was studied. The behavior of linearized acoustic theory at the throat of the duct was shown to be singular. This singularity implies that linearized acoustic theory is invalid. The explicit singular behavior was determined and used to sketch the development (by the method of matched asymptotic expansions) of a nonlinear theory for sound propagation in a sonic throat region. |
| File Size | 719707 |
| Page Count | 12 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19770003367 |
| Archival Resource Key | ark:/13960/t3712v749 |
| Language | English |
| Publisher Date | 1976-01-01 |
| Access Restriction | Open |
| Subject Keyword | Acoustics Perturbation Theory Ducted Flow Nonlinear Equations Flow Equations Throats Sound Propagation Subsonic Flow Asymptotic Methods Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
