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- Yoo, Chun Sang
- Combustion and Propulsion Lab.
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Effects of nonthermal plasma and hydrogen blending on lean blowout limit and CO/NOX emissions for turbulent CH4/air premixed flames in a swirled combustor
- Author(s)
- Kang, Sung Jong, Yoo, Chun Sang, Park, Jeong, Chung, Suk Ho
- Issued Date
- 2026-04
- Citation
- JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY, v.40, no.4, pp.3171 - 3180
- Abstract
- This study examines the combined influence of non-thermal plasma (NTP) activation and hydrogen blending (Omega H2 = 0-0.2) on lean blowout (LBO) limits and pollutant emissions in turbulent CH4/air premixed flames stabilized in a swirl combustor. Hydrogen blending enhances chemical reactivity and extends the LBO limit, whereas applying NTP under optimized discharge conditions (7 kV, 4 kHz) further extended the LBO limit through direct streamer-flame interaction and indirect stabilization mediated by ozone formation and ionic-wind effects. Applying NTP markedly reduced CO emissions by improving combustion performance, while NOX exhibited only a slight increase and remained within acceptable low-emission limits. These results demonstrate that hydrogen blending combined with applying NTP provides an effective route toward lean, low-emission combustion.
- Publisher
- KOREAN SOC MECHANICAL ENGINEERS
- ISSN
- 1738-494X
- Keyword (Author)
- Lean blowout limit, Nonthermal plasma, Combustion stability, Hydrogen blending, Swirl combustor
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