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Predictions of supersonic jet mixing and shock-associated noise compared with measured far-field data
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Dahl, Milo D. |
| Copyright Year | 2010 |
| Description | Codes for predicting supersonic jet mixing and broadband shock-associated noise were assessed using a database containing noise measurements of a jet issuing from a convergent nozzle. Two types of codes were used to make predictions. Fast running codes containing empirical models were used to compute both the mixing noise component and the shock-associated noise component of the jet noise spectrum. One Reynolds-averaged, Navier-Stokes-based code was used to compute only the shock-associated noise. To enable the comparisons of the predicted component spectra with data, the measured total jet noise spectra were separated into mixing noise and shock-associated noise components. Comparisons were made for 1/3-octave spectra and some power spectral densities using data from jets operating at 24 conditions covering essentially 6 fully expanded Mach numbers with 4 total temperature ratios. |
| File Size | 3268672 |
| Page Count | 81 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20100022152 |
| Archival Resource Key | ark:/13960/t22c40q2n |
| Language | English |
| Publisher Date | 2010-05-01 |
| Access Restriction | Open |
| Subject Keyword | Acoustics Shock Waves Jet Mixing Flow Jet Aircraft Noise Temperature Ratio Fluid Jets Predictions Supersonic Jet Flow Aerodynamic Noise Noise Measurement Noise Spectra Mach Number 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 |
