TY - GEN
T1 - Combustion Characteristics in an Ultra-Compact Trapped Vortex Combustor with Liquid Fuel Sprays
AU - Shim, Hanseul
AU - Wood, Eric
AU - O’Brien, Casey
AU - Lee, Tonghun
AU - Kastengren, Alan
AU - Mayhew, Eric K.
AU - Kim, Jeongwon
AU - Temme, Jacob
AU - Kweon, Chol Bum
N1 - Research was sponsored by the Army Research Laboratory and was accomplished under Cooperative Agreement Numbers W911NF-20-2-0220 and W911NF-18-2-0240 (ORAU Student Fellowship). The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the official policies, either expressed or implied, of the Army Research Laboratory or the U.S. government. The U.S. Government is authorized to reproduce and distribute reprints for Government purposes notwithstanding any copyright notation herein.
PY - 2024
Y1 - 2024
N2 - In the design of small-scale power generation systems using a combustor, achievement of high-efficiency, stable operation, and size reduction are critical challenges. To address these issues, studies on the concept and design of small-size combustors and their combustion characteristics are highly desirable. In this study, a small-scale trapped vortex combustor with fuel atomizing sprays is designed and combustion characteristics is experimentally studied. Visible and OH* chemiluminescence imaging are performed to visually inspect the flame and observe the spatial distribution of the primary chemical reaction region. Because the atomization and vaporization of the liquid fuel are critical to the combustion performance, qualitative and quantitative investigation of fuel sprays are conducted using X-ray phase contrast imaging. Combustion efficiency measurement is performed to examine the combustion performance. Combustion characteristics in the combustor are discussed with obtained spray information, heat release zone images, and combustion efficiencies. Using the designed combustor, stable combustion and good combustion efficiency are achieved, but relatively low performance is observed at atmospheric combustor pressure.
AB - In the design of small-scale power generation systems using a combustor, achievement of high-efficiency, stable operation, and size reduction are critical challenges. To address these issues, studies on the concept and design of small-size combustors and their combustion characteristics are highly desirable. In this study, a small-scale trapped vortex combustor with fuel atomizing sprays is designed and combustion characteristics is experimentally studied. Visible and OH* chemiluminescence imaging are performed to visually inspect the flame and observe the spatial distribution of the primary chemical reaction region. Because the atomization and vaporization of the liquid fuel are critical to the combustion performance, qualitative and quantitative investigation of fuel sprays are conducted using X-ray phase contrast imaging. Combustion efficiency measurement is performed to examine the combustion performance. Combustion characteristics in the combustor are discussed with obtained spray information, heat release zone images, and combustion efficiencies. Using the designed combustor, stable combustion and good combustion efficiency are achieved, but relatively low performance is observed at atmospheric combustor pressure.
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U2 - 10.2514/6.2024-0579
DO - 10.2514/6.2024-0579
M3 - Conference contribution
AN - SCOPUS:85192224486
SN - 9781624107115
T3 - AIAA SciTech Forum and Exposition, 2024
BT - AIAA SciTech Forum and Exposition, 2024
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - AIAA SciTech Forum and Exposition, 2024
Y2 - 8 January 2024 through 12 January 2024
ER -