Influence of air flow parameters on nanosecond repetitively pulsed discharges in a pin-annular electrode configuration
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ArticleKAUST Department
Clean Combustion Research CenterMechanical Engineering Program
Date
2016-03-16Online Publication Date
2016-03-16Print Publication Date
2016-04-20Permanent link to this record
http://hdl.handle.net/10754/621743
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The effect of various air flow parameters on the plasma regimes of nanosecond repetitively pulsed (NRP) discharges is investigated at atmospheric pressure. The two electrodes are in a pin-annular configuration, transverse to the mean flow. The voltage pulses have amplitudes up to 15 kV, a duration of 10 ns and a repetition frequency ranging from 15 to 30 kHz. The NRP corona to NRP spark (C-S) regime transition and the NRP spark to NRP corona (S-C) regime transition are investigated for different steady and harmonically oscillating flows. First, the strong effect of a transverse flow on the C-S and S-C transitions, as reported in previous studies, is verified. Second, it is shown that the azimuthal flow imparted by a swirler does not affect the regime transition voltages. Finally, the influence of low frequency harmonic oscillations of the air flow, generated by a loudspeaker, is studied. A strong effect of frequency and amplitude of the incoming flow modulation on the NRP plasma regime is observed. Results are interpreted based on the cumulative effect of the NRP discharges and an analysis of the residence times of fluid particles in the inter-electrode region. © 2016 IOP Publishing Ltd.Citation
Heitz SA, Moeck JP, Schuller T, Veynante D, Lacoste DA (2016) Influence of air flow parameters on nanosecond repetitively pulsed discharges in a pin-annular electrode configuration. J Phys D: Appl Phys 49: 155205. Available: http://dx.doi.org/10.1088/0022-3727/49/15/155205.Sponsors
This study has been supported by the Agence Nationale de la Recherche (ANR) and the Deutsche Forschungsgemeinschaft (DFG) through the DRACO project (grant numbers ANR-13-IS09-0004, MO 2551/1). The authors would also like to thank the Ecole Normale Superieure (ENS) de Cachan, for the stipend of Sylvain Heitz.Publisher
IOP Publishingae974a485f413a2113503eed53cd6c53
10.1088/0022-3727/49/15/155205