We present an experimental study of lean mixture ignition by nanosecond repetitively pulsed (NRP) discharges. The plasma is created in a lean propane/air mixture at pressure up to 10 bar and equivalence ratio 0.7, premixed in a constant volume vessel. We characterize the initial spark radius, the ignition kernel development and the flame propagation as a function of pressure (up to 10 bar) and the pulse energy (1–6 mJ per pulse). Comparisons with a conventional igniter show that better results are obtained with NRP discharges in terms of flame propagation speed, in particular at high pressure, due to the increased wrinkling of the flame front that is induced by NRP discharges.
|Original language||English (US)|
|Number of pages||19|
|Journal||Plasma Chemistry and Plasma Processing|
|State||Published - Jan 1 2016|
Bibliographical noteFunding Information:
This research has been supported by Agence Nationale de la Recherche FAMAC project (Grant No. ANR-12-VPTT-0002) and PLASMAFLAME project (Grant No. ANR-11-BS09-025-01), and by a doctoral grant for D. XU provided by the Erasmus Mundus Tandem Program. We also thank Prof. Jun Hayashi for useful discussions.
© 2015, Springer Science+Business Media New York.
- High pressure
- Lean mixtures
- Nanosecond repetitively pulsed discharges
- Plasma assisted combustion
ASJC Scopus subject areas
- Chemical Engineering(all)
- Condensed Matter Physics
- Surfaces, Coatings and Films