Date of Award
Master of Science (MS)
Electrical & Computer Engineering
Transient plasma ignition (TPI) uses highly non-equilibrium plasmas, driven by less than 100 nanosecond, high-voltage pulses, to initiate combustion. The effects of pulse repetition frequency (PRF) and ultrashort nanosecond rise times on TPI are investigated in this work using lean, stoichiometric, and rich air-fuel mixtures at atmospheric pressure. Experimental data show the transient plasmas driven by ultrashort rise time, high voltage pulses at high PRF’s enhance the combustion of lean or stoichiometric air-methane mixtures in a static chamber. In particular, increasing PRF enhances the combustion performance by means of reduced delay times independent of the equivalence ratio of the air-fuel mixture. Plasmas driven by shorter rise time pulses improve combustion performance by reducing ignition delay time and increasing peak pressure in lean and stoichiometric mixtures. As TPI promises improved combustion efficiency and reduced emission, this study provides important pulse power parameter information to optimize TPI for combustion.
Alderman, David W..
"Pulse Power Effects on Transient Plasma Ignition for Combustion"
(2019). Master of Science (MS), Thesis, Electrical/Computer Engineering, Old Dominion University, DOI: 10.25777/skjc-8882