Numerical and Analytical Assessment of a Coupled Rotating Detonation Engine and Turbine Experiment
| Autor: | Andrew Naples, Daniel E. Paxson |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Pressure drop
Physics 020301 aerospace & aeronautics Mathematical model business.industry Detonation 02 engineering and technology Injector Mechanics Computational fluid dynamics Propulsion 01 natural sciences Turbine 010305 fluids & plasmas law.invention 0203 mechanical engineering law 0103 physical sciences Total pressure Aerospace engineering business |
| Zdroj: | 55th AIAA Aerospace Sciences Meeting. |
| DOI: | 10.2514/6.2017-1746 |
| Popis: | An analysis is presented of an experimental rig comprising a rotating detonation engine (RDE) with bypass ejector flow coupled to a downstream turbine. The analysis used a validated computational fluid dynamics RDE simulation combined with straightforward algebraic mixing equations for the bypass flow. The objectives of the analysis were to supplement and interpret the necessarily sparse measurements from the rig, and to assess the performance of the RDE itself, which was not instrumented in this installation. The analysis is seen to agree reasonably well with available data. It shows that the RDE is operating in an unusual fashion, with subsonic flow throughout the exhaust plane. The detonation event itself is producing a total pressure rise relative to the pre-detonative pressure; however, the length of the device and the substantial flow restriction at the inlet yield an overall pressure loss. This is not surprising since the objective of the rig test was primarily aimed at investigating RDE/turbine interactions, and not on performance optimization. Furthermore, the RDE was designed for fundamental detonation studies and not performance. Nevertheless, the analysis indicates that with some small alterations to the design, an RDE with an overall pressure rise is possible. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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