The effects of gaseous bubble composition and gap distance on the characteristics of nanosecond discharges in distilled water

Handle URI:
http://hdl.handle.net/10754/621753
Title:
The effects of gaseous bubble composition and gap distance on the characteristics of nanosecond discharges in distilled water
Authors:
Hamdan, Ahmad ( 0000-0001-5591-2291 ) ; Cha, Min Suk ( 0000-0003-4059-3421 )
Abstract:
Electric discharge in liquids with bubbles can reduce the energy consumption, which increases treatment efficiency. We present an experimental study of nanosecond discharges in distilled water bubbled with the monoatomic gas argon and with the polyatomic gases methane, carbon dioxide, and propane. We monitor the time evolution of the voltage and current waveforms, and calculate the injected charges to characterize the discharge. We establish a relationship between the injected charges and the shape of the plasma by time-resolved imaging to find that increasing the size of the gap reduces the injected charges. Moreover, we determine the plasma characteristics, including electron density, excitation temperatures (for atoms and ions), and rotational temperature of the OH and C2 radicals found in the plasma. Our space- and time-averaged measurements allow us to propose a spatial distribution of the plasma that is helpful for understanding the plasma dynamics necessary to develop and optimize applications based on nanosecond discharges in bubbled liquids. © 2016 IOP Publishing Ltd.
KAUST Department:
Clean Combustion Research Center
Citation:
Hamdan A, Cha MS (2016) The effects of gaseous bubble composition and gap distance on the characteristics of nanosecond discharges in distilled water. J Phys D: Appl Phys 49: 245203. Available: http://dx.doi.org/10.1088/0022-3727/49/24/245203.
Publisher:
IOP Publishing
Journal:
Journal of Physics D: Applied Physics
Issue Date:
17-May-2016
DOI:
10.1088/0022-3727/49/24/245203
Type:
Article
ISSN:
0022-3727; 1361-6463
Sponsors:
The research reported in this publication was supported by Competitive Research Funding from King Abdullah University of Science and Technology (KAUST). The authors would like to thank Dr Thierry Belmonte for a helpful discussion about equilibrium in plasmas.
Appears in Collections:
Articles; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorHamdan, Ahmaden
dc.contributor.authorCha, Min Suken
dc.date.accessioned2016-11-03T13:24:12Z-
dc.date.available2016-11-03T13:24:12Z-
dc.date.issued2016-05-17en
dc.identifier.citationHamdan A, Cha MS (2016) The effects of gaseous bubble composition and gap distance on the characteristics of nanosecond discharges in distilled water. J Phys D: Appl Phys 49: 245203. Available: http://dx.doi.org/10.1088/0022-3727/49/24/245203.en
dc.identifier.issn0022-3727en
dc.identifier.issn1361-6463en
dc.identifier.doi10.1088/0022-3727/49/24/245203en
dc.identifier.urihttp://hdl.handle.net/10754/621753-
dc.description.abstractElectric discharge in liquids with bubbles can reduce the energy consumption, which increases treatment efficiency. We present an experimental study of nanosecond discharges in distilled water bubbled with the monoatomic gas argon and with the polyatomic gases methane, carbon dioxide, and propane. We monitor the time evolution of the voltage and current waveforms, and calculate the injected charges to characterize the discharge. We establish a relationship between the injected charges and the shape of the plasma by time-resolved imaging to find that increasing the size of the gap reduces the injected charges. Moreover, we determine the plasma characteristics, including electron density, excitation temperatures (for atoms and ions), and rotational temperature of the OH and C2 radicals found in the plasma. Our space- and time-averaged measurements allow us to propose a spatial distribution of the plasma that is helpful for understanding the plasma dynamics necessary to develop and optimize applications based on nanosecond discharges in bubbled liquids. © 2016 IOP Publishing Ltd.en
dc.description.sponsorshipThe research reported in this publication was supported by Competitive Research Funding from King Abdullah University of Science and Technology (KAUST). The authors would like to thank Dr Thierry Belmonte for a helpful discussion about equilibrium in plasmas.en
dc.publisherIOP Publishingen
dc.subjectinjected chargeen
dc.titleThe effects of gaseous bubble composition and gap distance on the characteristics of nanosecond discharges in distilled wateren
dc.typeArticleen
dc.contributor.departmentClean Combustion Research Centeren
dc.identifier.journalJournal of Physics D: Applied Physicsen
kaust.authorHamdan, Ahmaden
kaust.authorCha, Min Suken
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