Conference proceeding
Spray and soot characteristics of liquid spray flames in a high-pressure sector combustor
U.S. National Combustion Meeting, 14 (Boston, Massachusetts, 03/16/2025–03/19/2025)
03/16/2025–03/19/2025
DOI:
https://doi.org/10.7273/000008022
Abstract
Conventional aviation combustors use liquid fuels where spray atomization is important for efficient combustion process and resultant emissions. In this study, a three sector combustor with commercial pre-filming airblast injectors are utilized to analyze the effect of operating conditions on spray and soot formation. Measurements are performed with both Jet-A and sustainable aviation fuel (SAF) at different operating pressures, preheat temperatures and global equivalence ratios. Phase Doppler particle anemometry is utilized to measure instantaneous drop-sizes in both non-reacting and reacting conditions. Instantaneous soot particle temperature and soot volume fraction distributions were measured in the primary zone of the combustor using two-color planar auto-compensating laser induced incandescence for both Jet-A and SAF flames. The drop-sizes shifted towards larger diameters for reacting conditions compared to non-reacting flow, possibly indicating the complete evaporation of smaller droplets at a given operating condition. In comparison to Jet-A, SAF fuel spray produced slightly smaller droplets owing to its reduced surface tension and higher vapor pressure values. The maximum averaged SVF were observed to be along the main reaction zone with values around 5 ppm for Jet-A flames at the operated conditions. For the SAF flames at the same conditions, the averaged SVF reduced by almost 2-3 times compared to Jet-A flames.
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Details
- Title
- Spray and soot characteristics of liquid spray flames in a high-pressure sector combustor
- Creators
- Rahul Vishwanath (Author) - Georgia Institute of TechnologyDominic Olimid (Author) - Georgia Institute of TechnologyEric Douglas (Author) - Georgia Institute of TechnologyOleksandr Bibik (Author) - Georgia Institute of TechnologyShawn Wehe (Author) - Georgia Institute of TechnologyYi Chen Mazumdar (Author)Adam Steinberg (Author) - Georgia Institute of TechnologyWenting Sun (Author) - Georgia Institute of Technology
- Conference
- U.S. National Combustion Meeting, 14 (Boston, Massachusetts, 03/16/2025–03/19/2025)
- Academic Unit
- Emissions
- Grants
- 13-C-AJFE-GIT-080, Federal Aviation Administration (United States, Washington) - FAA
- Identifiers
- 99901364590301842
- Resource Type
- Conference proceeding