Abstract
Non-intrusive hydroxyl radical (OH) planar laser-induced fluorescence (PLIF) measurements were obtained in configuration C of the University of Virginia supersonic combustion experiment. The combustion of hydrogen fuel injected through an unswept compression ramp into a supersonic cross-flow was imaged over a range of streamwise positions. Images were corrected for optical distortion, variations in the laser sheet profile, and different camera views. Results indicate an effect of fuel equivalence ratio on combustion zone shape and local turbulence length scale. The streamwise location of the reaction zone relative to the fuel injector was also found to be sensitive to the fuel equivalence ratio. The flow boundary conditions in the combustor section, which are sensitive to the fuel flow rate, are believed to have caused this effect. A combination of laser absorption and radiative trapping effects are proposed to have caused asymmetry observed in the images. The results complement previously published OH PLIF data obtained for configuration A along with other non-intrusive measurements to form a database for computational fluid dynamics (CFD) model validation.
Original language | English (US) |
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Title of host publication | 51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013 |
State | Published - 2013 |
Externally published | Yes |
Event | 51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013 - Grapevine, TX, United States Duration: Jan 7 2013 → Jan 10 2013 |
Other
Other | 51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013 |
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Country/Territory | United States |
City | Grapevine, TX |
Period | 01/7/13 → 01/10/13 |
ASJC Scopus subject areas
- Space and Planetary Science
- Aerospace Engineering