TY - GEN
T1 - Ignition, sustained flame, and extinction of a dielectric-barrier-discharge altered hydrogen jet in a cross-flow
AU - Fontaine, Ryan A.
AU - Retter, Jonathan E.
AU - Freund, Jonathan B.
AU - Glumac, Nick
AU - Elliott, Gregory S.
N1 - Funding Information:
The authors would like to thank the undergraduate researchers that assisted with data collection, Kevin Kim and Joe Stelter, Tomoya Wada for his discussions on the topic, and the XPACC simulations and modeling teams for helping shape the direction of the work. This material is based in part upon work supported by the Department of Energy, National Nuclear Security Administration, under Award Number DE-NA0002374.
Publisher Copyright:
© 2016, American Institute of Aeronautics and Astronautics Inc, AIAA. All Rights Reserved.
PY - 2016
Y1 - 2016
N2 - 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.
AB - 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.
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U2 - 10.2514/6.2016-0453
DO - 10.2514/6.2016-0453
M3 - Conference contribution
AN - SCOPUS:85007452547
SN - 9781624103933
T3 - 54th AIAA Aerospace Sciences Meeting
BT - 54th AIAA Aerospace Sciences Meeting
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - 54th AIAA Aerospace Sciences Meeting, 2016
Y2 - 4 January 2016 through 8 January 2016
ER -