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: Chapter in Book/Report/Conference proceedingConference contribution

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 towards resolving the chemical structure in the wake of streamers (or the afterglow) by using a batch reactor model. This can afford the use of very detailed chemical kinetic information. The full non-equilibrium 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)
Title of host publicationASME 2019 Internal Combustion Engine Division Fall Technical Conference, ICEF 2019
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791859346
DOIs
StatePublished - 2020
Externally publishedYes
EventASME 2019 Internal Combustion Engine Division Fall Technical Conference, ICEF 2019 - Chicago, United States
Duration: Oct 20 2019Oct 23 2019

Publication series

NameASME 2019 Internal Combustion Engine Division Fall Technical Conference, ICEF 2019

Conference

ConferenceASME 2019 Internal Combustion Engine Division Fall Technical Conference, ICEF 2019
CountryUnited States
CityChicago
Period10/20/1910/23/19

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 DE-AC02-06CH11357.

Publisher Copyright:
Copyright © 2019 ASME

Keywords

  • Ignition
  • Kinetics
  • Non-equilibrium
  • Plasma

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