Ignition of Quiescent Lean Propane–Air Mixtures at High Pressure by Nanosecond Repetitively Pulsed Discharges

D. A. Xu, Deanna Lacoste, C. O. Laux*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

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 languageEnglish (US)
Pages (from-to)309-327
Number of pages19
JournalPlasma Chemistry and Plasma Processing
Volume36
Issue number1
DOIs
StatePublished - Jan 1 2016

Keywords

  • High pressure
  • Ignition
  • Lean mixtures
  • Nanosecond repetitively pulsed discharges
  • Plasma assisted combustion

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Condensed Matter Physics
  • Surfaces, Coatings and Films

Fingerprint Dive into the research topics of 'Ignition of Quiescent Lean Propane–Air Mixtures at High Pressure by Nanosecond Repetitively Pulsed Discharges'. Together they form a unique fingerprint.

Cite this