Journal
COMBUSTION AND FLAME
Volume 160, Issue 11, Pages 2396-2403Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.combustflame.2013.05.023
Keywords
Plasma; Discharge; Combustion; Nanosecond; Breakdown
Categories
Funding
- National Science Foundation
- Department of Energy through the NSF/DOE Partnership in Basic Plasma Science
- Stanford Graduate Fellowship
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This paper examines the stabilization of premixed and jet diffusion flames of methane, ethane, and propane by nanosecond repetitive pulsed plasma discharges. Combustion products are measured using gas chromatography while laser-induced breakdown spectroscopy (LIBS) is used to characterize the local equivalence ratios. We find that in premixed flames, although plasma-assisted flame holding takes place under fuel-lean conditions, propagation of combustion occurs at/or above the known lean flammability limits. In jet diffusion flames, the flames are found to be anchored best to the discharge at jet speeds that are much higher than the normal blow-off speed when the discharge is placed where the local fuel-air equivalence ratio is in a limited flammable regime. (C) 2013 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
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