Instability waves have been established as noise generators in supersonic jets. Recent analysis of these slowly diverging jets has shown that these instability waves radiate noise to the far field when the waves have components with phase velocities that are supersonic relative to the ambient speed
Noise from Imperfectly Expanded Supersonic Coaxial Jets
โ Scribed by Debiasi, Marco; Papamoschou, Dimitri
- Book ID
- 118055585
- Publisher
- American Institute of Aeronautics and Astronautics
- Year
- 2001
- Tongue
- English
- Weight
- 239 KB
- Volume
- 39
- Category
- Article
- ISSN
- 0001-1452
- DOI
- 10.2514/2.1348
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The instability wave noise generation model is used to study the instability waves in the two shear layers of an inverted velocity profile, supersonic, coaxial jet and the noise radiated from the dominant wave. The inverted velocity profile jet has a high speed outer stream surrounding a low speed i
Recent theories for supersonic jet noise have used an instability wave noise generation model to predict radiated noise. This model requires a known mean flow that has typically been described by simple analytic functions for single jet mean flows. The mean flow of supersonic coaxial jets is not des