Computational Studies of Positive and Negative Streamers in Bubbles Suspended in Distilled Water

Handle URI:
http://hdl.handle.net/10754/623526
Title:
Computational Studies of Positive and Negative Streamers in Bubbles Suspended in Distilled Water
Authors:
Sharma, Ashish; Levko, Dmitry; Raja, Laxminarayan L.
Abstract:
We perform computational studies of nanosecond streamers generated in helium bubbles immersed in distilled water under high pressure conditions. The model takes into account the presence of water vapor in the gas bubble for an accurate description of the chemical kinetics of the discharge. We apply positive and negative trigger voltages much higher than the breakdown voltage and study the dynamic characteristics of the resulting discharge. We observe that, for high positive trigger voltages, the streamer moves along the surface of the gas bubble during the initial stages of the discharge. We also find a considerable difference in the evolution of the streamer discharge for positive and negative trigger voltages with more uniform volumetric distribution of species in the streamer channel for negative trigger voltages due to formation of multiple streamers. We also observe that the presence of water vapor does not influence the breakdown voltage of the discharge but greatly affects the composition of dominant species in the trail of the streamer channel.
Citation:
Sharma A, Levko D, Raja LL (2017) Computational Studies of Positive and Negative Streamers in Bubbles Suspended in Distilled Water. 55th AIAA Aerospace Sciences Meeting. Available: http://dx.doi.org/10.2514/6.2017-1970.
Publisher:
American Institute of Aeronautics and Astronautics (AIAA)
Journal:
55th AIAA Aerospace Sciences Meeting
Conference/Event name:
55th AIAA Aerospace Sciences Meeting
Issue Date:
5-Jan-2017
DOI:
10.2514/6.2017-1970
Type:
Conference Paper
Sponsors:
The research reported in this publication was supported by Competitive Research Funding from King Abdullah University of Science and Technology (KAUST).
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorSharma, Ashishen
dc.contributor.authorLevko, Dmitryen
dc.contributor.authorRaja, Laxminarayan L.en
dc.date.accessioned2017-05-15T10:35:06Z-
dc.date.available2017-05-15T10:35:06Z-
dc.date.issued2017-01-05en
dc.identifier.citationSharma A, Levko D, Raja LL (2017) Computational Studies of Positive and Negative Streamers in Bubbles Suspended in Distilled Water. 55th AIAA Aerospace Sciences Meeting. Available: http://dx.doi.org/10.2514/6.2017-1970.en
dc.identifier.doi10.2514/6.2017-1970en
dc.identifier.urihttp://hdl.handle.net/10754/623526-
dc.description.abstractWe perform computational studies of nanosecond streamers generated in helium bubbles immersed in distilled water under high pressure conditions. The model takes into account the presence of water vapor in the gas bubble for an accurate description of the chemical kinetics of the discharge. We apply positive and negative trigger voltages much higher than the breakdown voltage and study the dynamic characteristics of the resulting discharge. We observe that, for high positive trigger voltages, the streamer moves along the surface of the gas bubble during the initial stages of the discharge. We also find a considerable difference in the evolution of the streamer discharge for positive and negative trigger voltages with more uniform volumetric distribution of species in the streamer channel for negative trigger voltages due to formation of multiple streamers. We also observe that the presence of water vapor does not influence the breakdown voltage of the discharge but greatly affects the composition of dominant species in the trail of the streamer channel.en
dc.description.sponsorshipThe research reported in this publication was supported by Competitive Research Funding from King Abdullah University of Science and Technology (KAUST).en
dc.publisherAmerican Institute of Aeronautics and Astronautics (AIAA)en
dc.titleComputational Studies of Positive and Negative Streamers in Bubbles Suspended in Distilled Wateren
dc.typeConference Paperen
dc.identifier.journal55th AIAA Aerospace Sciences Meetingen
dc.conference.date2017-01-09 to 2017-01-13en
dc.conference.name55th AIAA Aerospace Sciences Meetingen
dc.conference.locationGrapevine, TX, USAen
dc.contributor.institutionDept. of Aerospace Engineering and Engineering Mechanics, The University of Texas at Austin, Austin, TX, 78712en
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