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Computation of supersonic jet noise under imperfectly expanded conditions
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Krejsa, Eugene A. Kim, Chan M. Khavaran Sr., Abbas |
| Copyright Year | 1993 |
| Description | The turbulent mixing noise of supersonic jet under imperfectly expanded conditions is calculated for convergent and convergent-divergent (CD) axisymmetric nozzle geometries. The noise prediction incorporates CFD solution of Navier-Stokes equations. The effect of grid resolution on shock structure computation is demonstrated. Mixing noise spectra predicted from fine and coarse grid solutions exhibit little sensitivity to the grid resolution. A proper grid resolution, however, results in a significant improvement in shock capturing capability and helps predictions agree favorably with experimental data. Good agreement between predicted noise spectra and data shows that the CFD-incorporated noise prediction scheme, which was demonstrated for shock-free conditions, works as well for shock-containing flow conditions. |
| File Size | 597323 |
| Page Count | 12 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19930006241 |
| Archival Resource Key | ark:/13960/t88h3j87c |
| Language | English |
| Publisher Date | 1993-01-01 |
| Access Restriction | Open |
| Subject Keyword | Acoustics Navier-stokes Equation Nozzle Geometry Sensitivity Computational Fluid Dynamics Jet Aircraft Noise Supersonic Jet Flow Convergent-divergent Nozzles Computational Grids Aeroacoustics Noise Spectra Noise Prediction Turbulent Mixing Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
