A Computational Study of the Thermodynamic Conditions Leading to Autoignition in Nanosecond Pulsed Discharges

Vyaas Gururajan, Riccardo Scarcelli, Anand Karpatne, Douglas Breden, Laxminarayan Raja, Sayan Biswas, Isaac Ekoto

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Nanosecond pulsed discharges have attracted the attention of engine manufacturers due to the possibility of attaining distributed ignition sites that accelerate burn rates while resulting in very little electrode erosion. Multidimensional modeling tools currently capture the electrical structure of such discharges accurately, but resolving the chemical structure remains a challenging problem owing to the disparity of time-scales in streamer propagation (nanoseconds) and ignition phenomena (microseconds). The purpose of this study is to extend multidimensional results toward resolving the chemical structure in the wake of streamers (or the afterglow) by using a batch reactor model (BRM). This can afford the use of very detailed chemical kinetic information. The full nonequilibrium nature of the electrons is taken into account, along with fast gas heating, shock wave propagation, and thermal diffusion. The results shed light on ignition phenomena brought about by such discharges.

Original languageEnglish (US)
Article number111301
JournalJournal of Engineering for Gas Turbines and Power
Volume143
Issue number11
DOIs
StatePublished - Nov 2021

Bibliographical note

Funding Information:
Argonne National Laboratory’s work was supported by the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Office of Vehicle Technology under Contract No. DE-AC02-06CH11357.

Publisher Copyright:
Copyright © 2021 by ASME

Keywords

  • ignition
  • kinetics
  • nonequilibrium
  • plasma

Fingerprint

Dive into the research topics of 'A Computational Study of the Thermodynamic Conditions Leading to Autoignition in Nanosecond Pulsed Discharges'. Together they form a unique fingerprint.

Cite this