Wedge Shock and Nozzle Exhaust Plume Interaction in a Supersonic Jet Flow
| Autor: | Khairul Zaman, Amy F. Fagan, Raymond S. Castner, Christopher M. Heath |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Shock wave
020301 aerospace & aeronautics Jet (fluid) Shock (fluid dynamics) business.industry Acoustics Nozzle Aerospace Engineering Fluid mechanics 02 engineering and technology Mechanics Computational fluid dynamics 01 natural sciences 010305 fluids & plasmas Sonic boom Plume 0203 mechanical engineering 0103 physical sciences Shock diamond Supersonic speed business Geology |
| Zdroj: | 52nd Aerospace Sciences Meeting. |
| DOI: | 10.2514/6.2014-0232 |
| Popis: | Fundamental research for sonic boom reduction is needed to quantify the interaction of shock waves generated from the aircraft wing or tail surfaces with the nozzle exhaust plume. Aft body shock waves that interact with the exhaust plume contribute to the near-field pressure signature of a vehicle. The plume and shock interaction was studied using computational fluid dynamics and compared with experimental data from a coaxial convergent-divergent nozzle flow in an open jet facility. A simple diamond-shaped wedge was used to generate the shock in the outer flow to study its impact on the inner jet flow. Results show that the compression from the wedge deflects the nozzle plume and shocks form on the opposite plume boundary. The sonic boom pressure signature of the nozzle exhaust plume was modified by the presence of the wedge. Both the experimental results and computational predictions show changes in plume deflection. |
| Databáze: | OpenAIRE |
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