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Cduct-larc status - shear layer refraction and noise radiation
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Farassat, F. Nark, Douglas M. |
| Copyright Year | 2006 |
| Description | A proposed boundary condition accounting for shear layer effects within the Ffowcs Williams-Hawkings radiation module of the CDUCT-LaRC code is investigated. The development and numerical justification of the boundary condition formulation are reviewed. An initial assessment of the effectiveness of the shear layer correction is conducted through comparison with experimental data. Preliminary results indicate that the correction provides physically meaningful modifications of the baseline predicted directivity patterns. Trends of peak directivity steepening and shifting that appeared in predicted patterns were found to follow similar structures in measured data, particularly at higher radiation angles. |
| File Size | 277734 |
| Page Count | 19 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20060013468 |
| Archival Resource Key | ark:/13960/t8bg7nk9d |
| Language | English |
| Publisher Date | 2006-01-01 |
| Access Restriction | Open |
| Subject Keyword | Acoustics Noise Propagation Directivity Shear Layers Sound Waves Ducted Fans Refraction Boundary Conditions Mathematical Models Aircraft Engines Grid Generation Mathematics Impedance Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
