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Sound propagation in a duct of periodic wall structure. [numerical analysis
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Kurze, U. |
| Copyright Year | 1978 |
| Description | A boundary condition, which accounts for the coupling in the sections behind the duct boundary, is given for the sound-absorbing duct with a periodic structure of the wall lining and using regular partition walls. The soundfield in the duct is suitably described by the method of differences. For locally active walls this renders an explicit approximate solution for the propagation constant. Coupling may be accounted for by the method of differences in a clear manner. Numerical results agree with measurements and yield information which has technical applications. |
| File Size | 1969431 |
| Page Count | 31 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19780016958 |
| Archival Resource Key | ark:/13960/t6sz13g61 |
| Language | English |
| Publisher Date | 1978-05-01 |
| Access Restriction | Open |
| Subject Keyword | Acoustics Ducted Flow Boundary Value Problems Numerical Analysis Sound Propagation Wall Flow Waveguides Boundary Conditions Absorptivity Acoustic Ducts Sound Pressure Pressure Gradients 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 |
