Combustion Characteristics in an Ultra-Compact Trapped Vortex Combustor with Liquid Fuel Sprays

Hanseul Shim, Eric Wood, Casey O’Brien, Tonghun Lee, Alan Kastengren, Eric K. Mayhew, Jeongwon Kim, Jacob Temme, Chol Bum Kweon

Research output: Chapter in Book/Report/Conference proceedingConference contribution


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.

Original languageEnglish (US)
Title of host publicationAIAA SciTech Forum and Exposition, 2024
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624107115
StatePublished - 2024
EventAIAA SciTech Forum and Exposition, 2024 - Orlando, United States
Duration: Jan 8 2024Jan 12 2024

Publication series

NameAIAA SciTech Forum and Exposition, 2024


ConferenceAIAA SciTech Forum and Exposition, 2024
Country/TerritoryUnited States

ASJC Scopus subject areas

  • Aerospace Engineering


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