| Autor: |
James C. Sisco, Loral O'Hara, William E. Anderson, E. Portillo |
| Rok vydání: |
2008 |
| Předmět: |
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| Zdroj: |
44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit. |
| DOI: |
10.2514/6.2008-4745 |
| Popis: |
An experiment was designed to investigate the acoustically-induced vortex shedding process observed in liquid rocket engine combustion chambers. The experiment was developed by a Propulsion Design, Build, Test class at Purdue University as a prototype experiment to a more complicated future experiment. The objective given to the class was to determine the phase relationship between vortex inception and the spatial and temporal acoustic modes. The experiment comprised of room temperature air flowing into a sudden expansion. An acoustic instability was induced in the chamber using a rotating pulsator device. Fluid interactions were visualized using a high speed camera, seeding fluid, and backlight effect. A mixture of 30% ethanol and water was used as the seeding fluid. Preliminary tests were run that indicate the chamber responds to the pulsator at the driving frequency. Several problems were encountered with the experimental setup and are discussed in the paper. Results from an analysis using the linear Euler equation model are also discussed. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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