| Autor: |
Arnab Roy, Corin Segal, Clement Joly |
| Rok vydání: |
2012 |
| Předmět: |
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| Zdroj: |
48th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit. |
| DOI: |
10.2514/6.2012-4091 |
| Popis: |
Supercritical uid injection using a single round injector into a quiescent atmosphere at subcritical and supercritical conditions was investigated experimentally with particular attention to supercritical-into-subcritical injection and the reassertion of surface tension. The entire system was binary since the atmosphere comprised an inert gas of a di erent composition than that of the injected uid. Density and density-gradient values were quanti ed and a novel method was applied for calculating the core lengths using the structures detected across the entire jet center plane. Jet spreading angles were also calculated and a model was proposed for the spreading angle dependence on chamber-to-injectant density ratio. A detailed comparison was provided with existing theoretical models and experimental data for both core lengths and spreading angles. This work complements the limited experimental studies dedicated to (i) supercritical-into-subcritical injection and subsequent nucleation, and (ii) spreading angle as well as core length dependence on density ratio. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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