Experimental study of the effect of nanosecond pulse discharge parameters on the methane-air mixture combustion

Tian, Jie; Xiong, Yong; Wang, Lu; Wang, Yongqi; Liu, Peng; Shi, Xinguo; Wang, Ning; Yin, Wei; Cheng, Yong; Zhao, Qingwu

doi:10.1016/j.fuel.2024.131166

Cited by 3 publications

(2 citation statements)

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“…In order to overcome the problems in the lean combustion process, plasma-assisted combustion technology has been widely studied. − With the progress of plasma-assisted ignition and combustion, plasma-assisted combustion technology is expected to become a more effective combustion control method . Plasma assists combustion mainly through three pathways: (1) thermal effect; (2) activation effect; (3) transport effect.…”

Section: Introductionmentioning

confidence: 99%

“… 11 − 13 With the progress of plasma-assisted ignition and combustion, 14 plasma-assisted combustion technology is expected to become a more effective combustion control method. 15 Plasma assists combustion mainly through three pathways: 16 (1) thermal effect; (2) activation effect; (3) transport effect. At present, studies mainly focus on nonequilibrium plasma-assisted combustion technology, which is used for igniting and flame stabilizing in the field of combustion.…”

Section: Introductionmentioning

confidence: 99%

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Investigation on the Regulation of the Combustion Characteristics of a Propane/Air Mixture by Repetitive nSDBD Pretreatment

Xiong,

Tian,

Cheng

et al. 2024

ACS Omega

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This paper investigates the effect of the transient repetitive nanosecond surface dielectric barrier discharge (nSDBD) pretreatment on the combustion characteristics of combustible mixtures. A method of using nSDBD online pretreatment of a combustible mixture to regulate the combustion characteristics of the mixture is proposed. The study is conducted in a constant-volume combustion chamber at atmospheric pressure and temperature using a propane/air mixture as fuel. The discharge characteristics of repetitive nSDBD and the effects of pretreatment discharge energy and interval time between the pretreatment and ignition on combustion rate are discussed. The results show that (1) For 12.5 kHz pulses, the filament length generated with the annular dielectric barrier electrode discharge can reach up to 7 mm, and the number of discharge filaments per pulse can reach 40. (2) Pretreating mixtures using repetitive nSDBD at millisecond time scale can significantly improve the combustion process. (3) Repetitive nSDBD pretreatment can enhance the activity of the mixture near the surface of nSDBD electrode, which leads to obvious wrinkles on the flame surface and significantly improves the combustion rate. (4) The flame rise time decreases with the increase of discharge energy and increases with the increase of the interval time between the pretreatment and ignition. The effect of the repetitive nSDBD pretreatment on flame propagation during the flame development period becomes more pronounced with the increase of the excess air coefficient. The research results of the paper reveal the law of online regulation of combustion characteristics of combustible mixtures by the nSDBD, providing experimental data support for the mechanism research of online regulation of combustion characteristics of combustible mixtures by the nSDBD.

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