Loading...
Please wait, while we are loading the content...
Similar Documents
High speed nozzles task
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Hamed, Awatef |
| Copyright Year | 1995 |
| Description | Supersonic cruise exhaust nozzles for advanced applications are optimized for a high nozzle pressure ratio (NPR) at design supersonic cruise Mach number and altitude. The performance of these nozzles with large expansion ratios are severely degraded for operations at subsonic speeds near sea level for NPR significantly less than the design values. The prediction of over-expanded 2DCD nozzles performance is critical to evaluating the internal losses and to the optimization of the integrated vehicle and propulsion system performance. The reported research work was aimed at validating and assessing existing computational methods and turbulence models for predicting the flow characteristics and nozzle performance at over-expanded conditions. Flow simulations in 2DCD nozzles were performed using five different turbulence models. The results are compared with the experimental data for the wall pressure distribution and thrust and flow coefficients at over-expanded static conditions. |
| File Size | 1472060 |
| Page Count | 26 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19960000873 |
| Archival Resource Key | ark:/13960/t3907280g |
| Language | English |
| Publisher Date | 1995-09-07 |
| Access Restriction | Open |
| Subject Keyword | Fluid Mechanics And Heat Transfer Propulsion System Performance Pressure Distribution Convergent-divergent Nozzles Flow Characteristics Nozzle Efficiency High Pressure Nozzle Design Exhaust Nozzles Supersonic Speed Nozzle Flow Turbulence Models Pressure Ratio Mathematical Models 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 |
