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Title: Modeling non-equilibrium discharge and validating transient plasma characteristics at above-atmospheric pressure

Abstract

Non-equilibrium plasma generated from positive-pulsed nanosecond electrical discharges into desiccated air is simulated in this paper using a multi-dimensional, multi-physics plasma solver. A pin-to-pin electrode configuration is used with a fixed 5.2 mm gap spacing. Peak pulse voltages range between 10.2 and 22.5 kV. Care is taken to match the exact electrode profile from the experiments, and adjust the electron collision frequency so that breakdown limits closely match those from corresponding experimental results. The optimized numerical simulations predict qualitative streamer structure that is in close agreement with experimental observations. Quantitative measurements of atomic oxygen at the anode tip and qualitative estimates of streamer gas heating are closely matched by simulations. The model results are used to provide insight into the spatial and temporal development of the transient plasma. Furthermore, the work performed in this paper delivers a numerical tool that can be extremely useful to link the post-discharge plasma properties to low-temperature plasma ignition mechanisms that are of great interest for the automotive industry.

Authors:
ORCiD logo [1];  [1];  [1]; ORCiD logo [2];  [3];  [4];  [4];  [5]
  1. Argonne National Lab. (ANL), Argonne, IL (United States)
  2. Sandia National Lab. (SNL-CA), Livermore, CA (United States); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  3. Sandia National Lab. (SNL-CA), Livermore, CA (United States)
  4. Esgee Technologies, Austin, TX (United States)
  5. The Univ. of Texas at Austin, Austin, TX (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
OSTI Identifier:
1489223
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Plasma Sources Science and Technology
Additional Journal Information:
Journal Volume: 27; Journal Issue: 12; Journal ID: ISSN 1361-6595
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; non-equilibrium plasma; multi-dimensional modeling; plasma assisted ignition

Citation Formats

Scarcelli, Riccardo, Wallner, Thomas, Som, Sibendu, Biswas, Sayan, Ekoto, Isaac, Breden, Douglas, Karpatne, Anand, and Raja, Laxminarayan L. Modeling non-equilibrium discharge and validating transient plasma characteristics at above-atmospheric pressure. United States: N. p., 2018. Web. doi:10.1088/1361-6595/aaf539.
Scarcelli, Riccardo, Wallner, Thomas, Som, Sibendu, Biswas, Sayan, Ekoto, Isaac, Breden, Douglas, Karpatne, Anand, & Raja, Laxminarayan L. Modeling non-equilibrium discharge and validating transient plasma characteristics at above-atmospheric pressure. United States. https://doi.org/10.1088/1361-6595/aaf539
Scarcelli, Riccardo, Wallner, Thomas, Som, Sibendu, Biswas, Sayan, Ekoto, Isaac, Breden, Douglas, Karpatne, Anand, and Raja, Laxminarayan L. Fri . "Modeling non-equilibrium discharge and validating transient plasma characteristics at above-atmospheric pressure". United States. https://doi.org/10.1088/1361-6595/aaf539. https://www.osti.gov/servlets/purl/1489223.
@article{osti_1489223,
title = {Modeling non-equilibrium discharge and validating transient plasma characteristics at above-atmospheric pressure},
author = {Scarcelli, Riccardo and Wallner, Thomas and Som, Sibendu and Biswas, Sayan and Ekoto, Isaac and Breden, Douglas and Karpatne, Anand and Raja, Laxminarayan L.},
abstractNote = {Non-equilibrium plasma generated from positive-pulsed nanosecond electrical discharges into desiccated air is simulated in this paper using a multi-dimensional, multi-physics plasma solver. A pin-to-pin electrode configuration is used with a fixed 5.2 mm gap spacing. Peak pulse voltages range between 10.2 and 22.5 kV. Care is taken to match the exact electrode profile from the experiments, and adjust the electron collision frequency so that breakdown limits closely match those from corresponding experimental results. The optimized numerical simulations predict qualitative streamer structure that is in close agreement with experimental observations. Quantitative measurements of atomic oxygen at the anode tip and qualitative estimates of streamer gas heating are closely matched by simulations. The model results are used to provide insight into the spatial and temporal development of the transient plasma. Furthermore, the work performed in this paper delivers a numerical tool that can be extremely useful to link the post-discharge plasma properties to low-temperature plasma ignition mechanisms that are of great interest for the automotive industry.},
doi = {10.1088/1361-6595/aaf539},
journal = {Plasma Sources Science and Technology},
number = 12,
volume = 27,
place = {United States},
year = {Fri Dec 28 00:00:00 EST 2018},
month = {Fri Dec 28 00:00:00 EST 2018}
}

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