TY - JOUR
T1 - Mitigating the response of premixed swirl flames to acoustic excitation by nanosecond repetitively pulsed discharges at elevated pressures
AU - Yu, Liang
AU - Aravind, B.
AU - Lacoste, Deanna A.
N1 - Funding Information:
This research was funded by the King Abdullah University of Science and Technology , through the baseline fund BAS/1/1396–01–01 .
Publisher Copyright:
© 2023 The Combustion Institute
PY - 2023/10
Y1 - 2023/10
N2 - This paper shows that nanosecond repetitively pulsed discharges were able to mitigate the response of lean methane-air swirl flames to acoustic excitations, at pressures up to 3 bar. Flame transfer functions with and without plasma discharges were investigated at pressures of 1.2, 2.0, and 3.0 bar, in a frequency range 48–380 Hz. Results show that the plasma discharges decreased by up to 50% the gain of the flame transfer functions, regardless of the pressure. Mechanisms responsible for this effect are discussed.
AB - This paper shows that nanosecond repetitively pulsed discharges were able to mitigate the response of lean methane-air swirl flames to acoustic excitations, at pressures up to 3 bar. Flame transfer functions with and without plasma discharges were investigated at pressures of 1.2, 2.0, and 3.0 bar, in a frequency range 48–380 Hz. Results show that the plasma discharges decreased by up to 50% the gain of the flame transfer functions, regardless of the pressure. Mechanisms responsible for this effect are discussed.
KW - Combustion control
KW - Flame transfer function
KW - Plasma assisted combustion
KW - Thermoacoustic instability
UR - http://www.scopus.com/inward/record.url?scp=85164377092&partnerID=8YFLogxK
U2 - 10.1016/j.combustflame.2023.112944
DO - 10.1016/j.combustflame.2023.112944
M3 - Article
AN - SCOPUS:85164377092
SN - 0010-2180
VL - 256
JO - Combustion and Flame
JF - Combustion and Flame
M1 - 112944
ER -