Electron swarm parameters and Townsend coefficients of atmospheric corona discharge plasmas by considering humidity
Humidity is a critical factor in atmospheric corona discharge. Fluid dynamics models have become a common method to explore the detailed corona discharge characteristics in humid air. However, the models require the specification of some key parameters, such as electron swarm parameters and Townsend...
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description | Humidity is a critical factor in atmospheric corona discharge. Fluid dynamics models have become a common method to explore the detailed corona discharge characteristics in humid air. However, the models require the specification of some key parameters, such as electron swarm parameters and Townsend coefficients, which strongly depend on the electron energy distribution function (EEDF). In this paper, the EEDFs of dry air and water vapor are compared by solving the electron Boltzmann equation using classical the two-term approximation. Moreover, electron drift velocity in dry air and water vapor are compared and validated. Finally, effects of humidity on the electron swarm parameters and Townsend coefficients are also discussed. The results show that the electron drift velocity in dry air and water vapor in this paper is well consistent with the previous experimental results for a wide range. It is concluded that the humidity could increase the electron mobility coefficient and decrease the electron diffusion coefficient in low reduced electric field, which are insensitive to humidity in high reduced electric field. The strength of ionization and attachment reactions are both enhanced by humidity, and the corona onset electric fields increase with the increase in humidity. |
doi_str_mv | 10.1063/1.5025116 |
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Fluid dynamics models have become a common method to explore the detailed corona discharge characteristics in humid air. However, the models require the specification of some key parameters, such as electron swarm parameters and Townsend coefficients, which strongly depend on the electron energy distribution function (EEDF). In this paper, the EEDFs of dry air and water vapor are compared by solving the electron Boltzmann equation using classical the two-term approximation. Moreover, electron drift velocity in dry air and water vapor are compared and validated. Finally, effects of humidity on the electron swarm parameters and Townsend coefficients are also discussed. The results show that the electron drift velocity in dry air and water vapor in this paper is well consistent with the previous experimental results for a wide range. It is concluded that the humidity could increase the electron mobility coefficient and decrease the electron diffusion coefficient in low reduced electric field, which are insensitive to humidity in high reduced electric field. The strength of ionization and attachment reactions are both enhanced by humidity, and the corona onset electric fields increase with the increase in humidity.</description><identifier>ISSN: 1070-664X</identifier><identifier>EISSN: 1089-7674</identifier><identifier>DOI: 10.1063/1.5025116</identifier><identifier>CODEN: PHPAEN</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Aerodynamics ; Atmospheric models ; Boltzmann transport equation ; Computational fluid dynamics ; Diffusion coefficient ; Distribution functions ; Electric corona ; Electric field strength ; Electric fields ; Electron diffusion ; Electron drift velocity ; Electron energy ; Electron energy distribution ; Electron mobility ; Electron swarms ; Humidity ; Ionization ; Parameters ; Plasma ; Plasma physics ; Plasmas (physics) ; Stellar coronas ; Water vapor</subject><ispartof>Physics of plasmas, 2018-06, Vol.25 (6)</ispartof><rights>Author(s)</rights><rights>2018 Author(s). Published by AIP Publishing.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c327t-9b1ab9aa10de7920d37feacd28654787b14e59c8b7f92e4b0e84b03a6543fda93</citedby><cites>FETCH-LOGICAL-c327t-9b1ab9aa10de7920d37feacd28654787b14e59c8b7f92e4b0e84b03a6543fda93</cites><orcidid>0000-0003-3660-5688</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://pubs.aip.org/pop/article-lookup/doi/10.1063/1.5025116$$EHTML$$P50$$Gscitation$$H</linktohtml><link.rule.ids>314,776,780,790,4498,27901,27902,76126</link.rule.ids></links><search><creatorcontrib>Chen, Xiaoyue</creatorcontrib><creatorcontrib>He, Wangling</creatorcontrib><creatorcontrib>Du, Xinyu</creatorcontrib><creatorcontrib>Yuan, Xiaoqing</creatorcontrib><creatorcontrib>Lan, Lei</creatorcontrib><creatorcontrib>Wen, Xishan</creatorcontrib><creatorcontrib>Wan, Baoquan</creatorcontrib><title>Electron swarm parameters and Townsend coefficients of atmospheric corona discharge plasmas by considering humidity</title><title>Physics of plasmas</title><description>Humidity is a critical factor in atmospheric corona discharge. Fluid dynamics models have become a common method to explore the detailed corona discharge characteristics in humid air. However, the models require the specification of some key parameters, such as electron swarm parameters and Townsend coefficients, which strongly depend on the electron energy distribution function (EEDF). In this paper, the EEDFs of dry air and water vapor are compared by solving the electron Boltzmann equation using classical the two-term approximation. Moreover, electron drift velocity in dry air and water vapor are compared and validated. Finally, effects of humidity on the electron swarm parameters and Townsend coefficients are also discussed. The results show that the electron drift velocity in dry air and water vapor in this paper is well consistent with the previous experimental results for a wide range. It is concluded that the humidity could increase the electron mobility coefficient and decrease the electron diffusion coefficient in low reduced electric field, which are insensitive to humidity in high reduced electric field. The strength of ionization and attachment reactions are both enhanced by humidity, and the corona onset electric fields increase with the increase in humidity.</description><subject>Aerodynamics</subject><subject>Atmospheric models</subject><subject>Boltzmann transport equation</subject><subject>Computational fluid dynamics</subject><subject>Diffusion coefficient</subject><subject>Distribution functions</subject><subject>Electric corona</subject><subject>Electric field strength</subject><subject>Electric fields</subject><subject>Electron diffusion</subject><subject>Electron drift velocity</subject><subject>Electron energy</subject><subject>Electron energy distribution</subject><subject>Electron mobility</subject><subject>Electron swarms</subject><subject>Humidity</subject><subject>Ionization</subject><subject>Parameters</subject><subject>Plasma</subject><subject>Plasma physics</subject><subject>Plasmas (physics)</subject><subject>Stellar coronas</subject><subject>Water vapor</subject><issn>1070-664X</issn><issn>1089-7674</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNqdkEtLAzEUhYMoWKsL_0HAlcLUZF6ZWUqpDxDcVHA33MmjTekkY25q6b83UsG9m3MPnO_eC4eQa85mnNXFPZ9VLK84r0_IhLOmzUQtytMfL1hW1-XHOblA3DDGyrpqJgQXWy1j8I7iHsJARwgw6KgDUnCKLv3eoU5Gem2MlVa7iNQbCnHwOK51sDJlaR-osijXEFaajlvAAZD2h5Q5tCphbkXXu8EqGw-X5MzAFvXV75yS98fFcv6cvb49vcwfXjNZ5CJmbc-hbwE4U1q0OVOFMBqkypu6KkUjel7qqpVNL0yb67JnuklSQEoLo6AtpuTmeHcM_nOnMXYbvwsuvexy1jQF51XSKbk9UjJ4xKBNNwY7QDh0nHU_nXa8--00sXdHFqWNEK13_4O_fPgDu1GZ4hvzVoeq</recordid><startdate>201806</startdate><enddate>201806</enddate><creator>Chen, Xiaoyue</creator><creator>He, Wangling</creator><creator>Du, Xinyu</creator><creator>Yuan, Xiaoqing</creator><creator>Lan, Lei</creator><creator>Wen, Xishan</creator><creator>Wan, Baoquan</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0003-3660-5688</orcidid></search><sort><creationdate>201806</creationdate><title>Electron swarm parameters and Townsend coefficients of atmospheric corona discharge plasmas by considering humidity</title><author>Chen, Xiaoyue ; He, Wangling ; Du, Xinyu ; Yuan, Xiaoqing ; Lan, Lei ; Wen, Xishan ; Wan, Baoquan</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c327t-9b1ab9aa10de7920d37feacd28654787b14e59c8b7f92e4b0e84b03a6543fda93</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Aerodynamics</topic><topic>Atmospheric models</topic><topic>Boltzmann transport equation</topic><topic>Computational fluid dynamics</topic><topic>Diffusion coefficient</topic><topic>Distribution functions</topic><topic>Electric corona</topic><topic>Electric field strength</topic><topic>Electric fields</topic><topic>Electron diffusion</topic><topic>Electron drift velocity</topic><topic>Electron energy</topic><topic>Electron energy distribution</topic><topic>Electron mobility</topic><topic>Electron swarms</topic><topic>Humidity</topic><topic>Ionization</topic><topic>Parameters</topic><topic>Plasma</topic><topic>Plasma physics</topic><topic>Plasmas (physics)</topic><topic>Stellar coronas</topic><topic>Water vapor</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Chen, Xiaoyue</creatorcontrib><creatorcontrib>He, Wangling</creatorcontrib><creatorcontrib>Du, Xinyu</creatorcontrib><creatorcontrib>Yuan, Xiaoqing</creatorcontrib><creatorcontrib>Lan, Lei</creatorcontrib><creatorcontrib>Wen, Xishan</creatorcontrib><creatorcontrib>Wan, Baoquan</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Physics of plasmas</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Chen, Xiaoyue</au><au>He, Wangling</au><au>Du, Xinyu</au><au>Yuan, Xiaoqing</au><au>Lan, Lei</au><au>Wen, Xishan</au><au>Wan, Baoquan</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Electron swarm parameters and Townsend coefficients of atmospheric corona discharge plasmas by considering humidity</atitle><jtitle>Physics of plasmas</jtitle><date>2018-06</date><risdate>2018</risdate><volume>25</volume><issue>6</issue><issn>1070-664X</issn><eissn>1089-7674</eissn><coden>PHPAEN</coden><abstract>Humidity is a critical factor in atmospheric corona discharge. Fluid dynamics models have become a common method to explore the detailed corona discharge characteristics in humid air. However, the models require the specification of some key parameters, such as electron swarm parameters and Townsend coefficients, which strongly depend on the electron energy distribution function (EEDF). In this paper, the EEDFs of dry air and water vapor are compared by solving the electron Boltzmann equation using classical the two-term approximation. Moreover, electron drift velocity in dry air and water vapor are compared and validated. Finally, effects of humidity on the electron swarm parameters and Townsend coefficients are also discussed. The results show that the electron drift velocity in dry air and water vapor in this paper is well consistent with the previous experimental results for a wide range. It is concluded that the humidity could increase the electron mobility coefficient and decrease the electron diffusion coefficient in low reduced electric field, which are insensitive to humidity in high reduced electric field. The strength of ionization and attachment reactions are both enhanced by humidity, and the corona onset electric fields increase with the increase in humidity.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/1.5025116</doi><tpages>7</tpages><orcidid>https://orcid.org/0000-0003-3660-5688</orcidid></addata></record> |
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subjects | Aerodynamics Atmospheric models Boltzmann transport equation Computational fluid dynamics Diffusion coefficient Distribution functions Electric corona Electric field strength Electric fields Electron diffusion Electron drift velocity Electron energy Electron energy distribution Electron mobility Electron swarms Humidity Ionization Parameters Plasma Plasma physics Plasmas (physics) Stellar coronas Water vapor |
title | Electron swarm parameters and Townsend coefficients of atmospheric corona discharge plasmas by considering humidity |
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