Ignition, sustained flame, and extinction of a dielectric-barrier-discharge altered hydrogen jet in a cross-flow

Ryan A. Fontaine, Jonathan E. Retter, Jonathan B. Freund, Nick Glumac, Gregory S. Elliott

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Plasmas can modify combustion, altering timescales and radical production. To explore opportunities for this, a novel dielectric barrier discharge actuator geometry is used to produce plasma with the aim of altering a low momentum hydrogen fuel jet exhausting into a cross-ow. The dielectric material is quartz, chosen after careful consideration of material response to both the plasma and thermal energy produced by combustion. The effect of the plasma discharge is studied in all three periods of combustion lifetime: ignition, sustained ame, and blow-off. The likelihood of sustained ignition of a ≈ 1 m/s H2 fuel jet is investigated, both with and without the dielectric barrier discharge plasma operating under various cross-ow conditions. The effect of the plasma on the sustained ame is also studied using water vapor emission as a marker for the ame intensity. Finally, the blow-off characteristics of a higher momentum H2/N2 ame at various levels of fuel concentration is explored with the plasma shown to effect the cross-ow velocity the ame can experience before extinction.

Original languageEnglish (US)
Title of host publication54th AIAA Aerospace Sciences Meeting
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624103933
DOIs
StatePublished - 2016
Event54th AIAA Aerospace Sciences Meeting, 2016 - San Diego, United States
Duration: Jan 4 2016Jan 8 2016

Publication series

Name54th AIAA Aerospace Sciences Meeting
Volume0

Other

Other54th AIAA Aerospace Sciences Meeting, 2016
CountryUnited States
CitySan Diego
Period1/4/161/8/16

ASJC Scopus subject areas

  • Aerospace Engineering

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