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Numerical Investigation on the Effects of Dielectric Barrier on a Nanosecond Pulsed Surface Dielectric Barrier Discharge
In order to understand the impacts of dielectric barrier on the discharge characteristics of a nanosecond pulsed surface dielectric barrier discharge (NS-DBD), the effects of dielectric constant and dielectric barrier thickness are numerically investigated by using a three-equation drift–diffusion m...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6864468/ https://www.ncbi.nlm.nih.gov/pubmed/31683577 http://dx.doi.org/10.3390/molecules24213933 |
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author | Zhang, Shen Chen, Zhenli Zhang, Binqian Chen, Yingchun |
author_facet | Zhang, Shen Chen, Zhenli Zhang, Binqian Chen, Yingchun |
author_sort | Zhang, Shen |
collection | PubMed |
description | In order to understand the impacts of dielectric barrier on the discharge characteristics of a nanosecond pulsed surface dielectric barrier discharge (NS-DBD), the effects of dielectric constant and dielectric barrier thickness are numerically investigated by using a three-equation drift–diffusion model with a 4-species 4-reaction air chemistry. When the dielectric constant increases, while the dielectric barrier thickness is fixed, the streamer propagation speed (V), the maximum streamer length (L), the discharge energy ([Formula: see text]), and the gas heating ([Formula: see text]) of a pulse increase, but the plasma sheath thickness (h), the fast gas heating efficiency [Formula: see text] , and the charge densities on the wall surface decrease. When the dielectric barrier thickness increases, while the dielectric constant is fixed, V, L, [Formula: see text] , and [Formula: see text] of a pulse decrease, but h, [Formula: see text] , and the charge densities on the wall surface increase. It can be concluded that the increase of the dielectric constant or the decrease of the dielectric barrier thickness results in the increase of the capacitance of the dielectric barrier, which enhances the discharge intensity. Increasing the dielectric constant and thinning the dielectric barrier layer improve the performance of the NS-DBD actuators. |
format | Online Article Text |
id | pubmed-6864468 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-68644682019-12-23 Numerical Investigation on the Effects of Dielectric Barrier on a Nanosecond Pulsed Surface Dielectric Barrier Discharge Zhang, Shen Chen, Zhenli Zhang, Binqian Chen, Yingchun Molecules Article In order to understand the impacts of dielectric barrier on the discharge characteristics of a nanosecond pulsed surface dielectric barrier discharge (NS-DBD), the effects of dielectric constant and dielectric barrier thickness are numerically investigated by using a three-equation drift–diffusion model with a 4-species 4-reaction air chemistry. When the dielectric constant increases, while the dielectric barrier thickness is fixed, the streamer propagation speed (V), the maximum streamer length (L), the discharge energy ([Formula: see text]), and the gas heating ([Formula: see text]) of a pulse increase, but the plasma sheath thickness (h), the fast gas heating efficiency [Formula: see text] , and the charge densities on the wall surface decrease. When the dielectric barrier thickness increases, while the dielectric constant is fixed, V, L, [Formula: see text] , and [Formula: see text] of a pulse decrease, but h, [Formula: see text] , and the charge densities on the wall surface increase. It can be concluded that the increase of the dielectric constant or the decrease of the dielectric barrier thickness results in the increase of the capacitance of the dielectric barrier, which enhances the discharge intensity. Increasing the dielectric constant and thinning the dielectric barrier layer improve the performance of the NS-DBD actuators. MDPI 2019-10-31 /pmc/articles/PMC6864468/ /pubmed/31683577 http://dx.doi.org/10.3390/molecules24213933 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Zhang, Shen Chen, Zhenli Zhang, Binqian Chen, Yingchun Numerical Investigation on the Effects of Dielectric Barrier on a Nanosecond Pulsed Surface Dielectric Barrier Discharge |
title | Numerical Investigation on the Effects of Dielectric Barrier on a Nanosecond Pulsed Surface Dielectric Barrier Discharge |
title_full | Numerical Investigation on the Effects of Dielectric Barrier on a Nanosecond Pulsed Surface Dielectric Barrier Discharge |
title_fullStr | Numerical Investigation on the Effects of Dielectric Barrier on a Nanosecond Pulsed Surface Dielectric Barrier Discharge |
title_full_unstemmed | Numerical Investigation on the Effects of Dielectric Barrier on a Nanosecond Pulsed Surface Dielectric Barrier Discharge |
title_short | Numerical Investigation on the Effects of Dielectric Barrier on a Nanosecond Pulsed Surface Dielectric Barrier Discharge |
title_sort | numerical investigation on the effects of dielectric barrier on a nanosecond pulsed surface dielectric barrier discharge |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6864468/ https://www.ncbi.nlm.nih.gov/pubmed/31683577 http://dx.doi.org/10.3390/molecules24213933 |
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