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Nonlinear stability of supersonic jets (Document No: 19960045755)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Copyright Year | 1996 |
| Description | The stability calculations made for a shock-free supersonic jet using the model based on parabolized stability equations are presented. In this analysis the large scale structures, which play a dominant role in the mixing as well as the noise radiated, are modeled as instability waves. This model takes into consideration non-parallel flow effects and also nonlinear interaction of the instability waves. The stability calculations have been performed for different frequencies and mode numbers over a range of jet operating temperatures. Comparisons are made, where appropriate, with the solutions to Rayleigh's equation (linear, inviscid analysis with the assumption of parallel flow). The comparison of the solutions obtained using the two approaches show very good agreement. |
| File Size | 780325 |
| Page Count | 31 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19960045755 |
| Archival Resource Key | ark:/13960/t28964j5f |
| Language | English |
| Publisher Date | 1996-09-01 |
| Access Restriction | Open |
| Subject Keyword | Fluid Mechanics And Heat Transfer Turbulent Flow Jet Aircraft Noise Computational Fluid Dynamics Aerodynamic Noise Frequencies Equations of Motion Aerodynamic Stability Rayleigh Equations Navier-stokes Equation Shock Waves Phase Velocity Linearity Flow Distribution Supersonic Jet Flow Inviscid Flow Nonlinearity Parallel Flow Aircraft Structures Operating Temperature Parabolic Differential Equations 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 |
