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User's manual for the langley boundary layer noise propagation program (mrs-blp)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Spence, Peter L. |
| Copyright Year | 1991 |
| Description | A computer program, McAninch-Rawls-Spence Boundary Layer Propagation (MRS-BLP), is described. This program models the refractive and scattering effects on acoustic pressure waves propagating through a boundary layer encompassing an aircraft's fuselage. The noise source is assumed known and generated by a propeller. The fuselage is represented by an infinitely long cylinder embedded in a longitudinal flow. By matching a numerical solution inside the boundary layer with an analytical solution outside the boundary layer, the program calculates the acoustic pressure at the surface of the cylinder given the incident field at the top of the boundary layer. The boundary layer flow velocity and sound speed profiles, as well as the boundary layer thickness may be specified by the user. A detailed description of the input parameters and how to execute the program is given. Example executions of MRS-BLP showing results are also included. |
| File Size | 1326818 |
| Page Count | 40 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19910022609 |
| Archival Resource Key | ark:/13960/t06x4892s |
| Language | English |
| Publisher Date | 1991-08-01 |
| Access Restriction | Open |
| Subject Keyword | Acoustics Noise Propagation Propeller Noise Interactional Aerodynamics Refraction Acoustic Scattering Acoustic Velocity Turbulent Boundary Layer Aerodynamic Noise Velocity Distribution User Manuals Computer Programs Sound Pressure Laminar Boundary Layer Noise Prediction Aircraft Flow Velocity Fuselages Applications Programs Computers Boundary Layer Flow 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 |
