Experimental investigation on gliding arc plasma ignition in double-head swirling combustor

Jia, Ming; Lin, Dong; Huang, Shengfang; Zhang, Zhibo; Cui, Wei; Wang, Weizhen

doi:10.1016/j.ast.2021.106726

Cited by 10 publications

(1 citation statement)

References 26 publications

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“…The results showed that a three-channel gliding arc (3-GA) and a five-channel gliding arc (5-GA) have higher average power than a single-channel arc (1-GA) under a constant wind speed. Jia et al [37] studied the instantaneous power of a gliding arc in a double-headed swirling combustion chamber and the CH * chemiluminescence imaging of the ignition process. The flameout limit of the single-channel gliding arc was widened, and its lean ignition limit expanded by approximately 67% compared with a traditional spark igniter.…”

Section: Introductionmentioning

confidence: 99%

Discharge and jet characteristics of gliding arc plasma igniter driven by pressure difference

Cheng¹,

Song²,

Huang³

et al. 2022

Plasma Sci. Technol.

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Stable combustion in an afterburner can help increase the thrust of the engine in a short time, thereby improving the maneuverability of a fighter. To improve the ignition performance of an afterburner, a twin-duct ignition platform was designed to study the performance of a gliding arc plasma igniter in a close-to-real afterburner condition. The research is carried out by a combination of experiments and simulations. The working environment of the igniter was explored through a numerical simulation. The results showed that the airflows ejected from the radiating holes formed a swirling sheath, which increased the anti-interference ability of the airflows jet. The influence of the pressure difference between the inlet and outlet of the igniter (∆p), the flow rate outside the igniter outlet (W2), and the installation angle (α) on the single-cycle discharge energy (E) as well as the maximum arc length (L) was studied through experiments. Three stages are identified: the airflows breakdown stage, the arc evolution stage, and the arc fracture stage. E and L increase by 107.3% and 366.2%, respectively, with ∆p increasing from 10 to 70 Torr. The relationship between L and ∆p obtained by data fitting is L=3-2.47/(1+(∆p/25)4). The relationship of L at different α is Lα=0°> (Lα=45° and Lα=135°) > Lα=180°> Lα=90°. E and L decreased by 18.2% and 37.3%, respectively, when ∆p=45 Torr and W2 is increased from 0 to 250 SLM.

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Section: Introductionmentioning

confidence: 99%