NDLI: Pressure effects on transient plasma discharge in air

Content Provider	IEEE Xplore Digital Library
Author	Lin, Y.-H. Singleton, D. Sanders, J.M. Kuthi, A. Gundersen, M.A.
Copyright Year	2013
Description	Author affiliation: Dept. of Electr. Eng.-Electrophys., USC, Los Angeles, CA, USA (Singleton, D.; Sanders, J.M.; Kuthi, A.)
Abstract	Summary form only given. Nanosecond scale pulsed high voltage discharges in air/fuel mixtures can generate radicals which in turn have been shown to improve combustion efficiency in gasoline fueled internal combustion engines. We are exploring the possibility to extend such transient plasma generation and expected radical species generation to the range of pressures encountered in compression-ignition (diesel) engines having compression ratios of ~20:1, thereby improving lean burning efficiency and extending the range of lean combustion. Our preliminary experiments on streamer propagation velocities have shown deviations from simple (pd = const.) based similarity law in the pressure range of 1-8 bar in synthetic air [1]. Here we report the results of streamer propagation experiments in the extended range of air pressures, 8-20 bar. In order to extend our work to 20 bar, the pulse generator output voltage is increased to 80 kV and pulse width is adjusted to match the streamer propagation time across the gap. The gap size is reduced to 1 mm and so does the anode radius to maintain similar electric field distribution. Optical data obtained from PI-MAX 3 ICCD camera is complemented with electrical measurements to deduce average streamer velocities. An empirical scaling factor will be derived and will be beneficial for electrode and pulse generator design in Transient Plasma Assisted Internal Combustion experiments.
Starting Page	1
Ending Page	1
File Size	103159
Page Count	1
File Format	PDF
ISBN	9781467351713
ISSN	07309244
DOI	10.1109/PLASMA.2013.6633230
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-06-16
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Transient analysis Plasmas Discharges (electric) Combustion Pulse generation Optical variables measurement Pressure effects
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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