Experimental and numerical studies of microwave power redistribution during thermal runaway
Plasma-assisted heating of Al2O3 is used to study power redistribution during thermal runaway when two samples are simultaneously heated in a microwave cavity. It is observed that thermal runaway in one of the samples completely suppresses the power availability to the other, demonstrating that ther...
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| Veröffentlicht in: | Journal of applied physics 2013-11, Vol.114 (20) |
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| container_title | Journal of applied physics |
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| creator | Chandran, Mahesh Bogdan Neculaes, V. Brisco, Drew Katz, Sarah Schoonover, Jeffrey Cretegny, Laurent |
| description | Plasma-assisted heating of Al2O3 is used to study power redistribution during thermal runaway when two samples are simultaneously heated in a microwave cavity. It is observed that thermal runaway in one of the samples completely suppresses the power availability to the other, demonstrating that thermal runaway in one region of the cavity acts as a “sink” for microwave power. Similar effects were observed during localized thermal runaway in a spatially extended single sample. Experimental trends were explored numerically by calculating the temperature evolution T (t) when one of the samples undergoes thermal runaway. Numerical investigation qualitatively captures the essential feature that thermal instability in one sample rapidly decreases the temperature of the second sample in agreement with the experimental observation. Experimental and numerical results as well as practical implications are discussed in the context of microwave processing of materials. |
| doi_str_mv | 10.1063/1.4832826 |
| format | Article |
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It is observed that thermal runaway in one of the samples completely suppresses the power availability to the other, demonstrating that thermal runaway in one region of the cavity acts as a “sink” for microwave power. Similar effects were observed during localized thermal runaway in a spatially extended single sample. Experimental trends were explored numerically by calculating the temperature evolution T (t) when one of the samples undergoes thermal runaway. Numerical investigation qualitatively captures the essential feature that thermal instability in one sample rapidly decreases the temperature of the second sample in agreement with the experimental observation. Experimental and numerical results as well as practical implications are discussed in the context of microwave processing of materials.</description><identifier>ISSN: 0021-8979</identifier><identifier>EISSN: 1089-7550</identifier><identifier>DOI: 10.1063/1.4832826</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Aluminum oxide ; Applied physics ; Availability ; Evolution ; Heating ; Holes ; Mathematical analysis ; Microwaves ; Numerical analysis ; Stability ; Thermal instability ; Thermal runaway</subject><ispartof>Journal of applied physics, 2013-11, Vol.114 (20)</ispartof><rights>2013 AIP Publishing LLC.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c290t-8e70737ddd8f05ba5999a1f2b4d48507e00c070e15bf9d7f30296fb2aa9cd34b3</citedby><cites>FETCH-LOGICAL-c290t-8e70737ddd8f05ba5999a1f2b4d48507e00c070e15bf9d7f30296fb2aa9cd34b3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Chandran, Mahesh</creatorcontrib><creatorcontrib>Bogdan Neculaes, V.</creatorcontrib><creatorcontrib>Brisco, Drew</creatorcontrib><creatorcontrib>Katz, Sarah</creatorcontrib><creatorcontrib>Schoonover, Jeffrey</creatorcontrib><creatorcontrib>Cretegny, Laurent</creatorcontrib><title>Experimental and numerical studies of microwave power redistribution during thermal runaway</title><title>Journal of applied physics</title><description>Plasma-assisted heating of Al2O3 is used to study power redistribution during thermal runaway when two samples are simultaneously heated in a microwave cavity. It is observed that thermal runaway in one of the samples completely suppresses the power availability to the other, demonstrating that thermal runaway in one region of the cavity acts as a “sink” for microwave power. Similar effects were observed during localized thermal runaway in a spatially extended single sample. Experimental trends were explored numerically by calculating the temperature evolution T (t) when one of the samples undergoes thermal runaway. Numerical investigation qualitatively captures the essential feature that thermal instability in one sample rapidly decreases the temperature of the second sample in agreement with the experimental observation. Experimental and numerical results as well as practical implications are discussed in the context of microwave processing of materials.</description><subject>Aluminum oxide</subject><subject>Applied physics</subject><subject>Availability</subject><subject>Evolution</subject><subject>Heating</subject><subject>Holes</subject><subject>Mathematical analysis</subject><subject>Microwaves</subject><subject>Numerical analysis</subject><subject>Stability</subject><subject>Thermal instability</subject><subject>Thermal runaway</subject><issn>0021-8979</issn><issn>1089-7550</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNpdkDtPwzAQgC0EEqUw8A8sscCQcraT2B5RVR5SJRaYGCIntsFV4hQ7pvTfY0QnptOdvnt9CF0SWBCo2S1ZlIJRQesjNCMgZMGrCo7RDICSQkguT9FZjBsAQgSTM_S2-t6a4AbjJ9Vj5TX2aciFLmdxStqZiEeLB9eFcae-DN6OOxNwMNrFKbg2TW70WKfg_DuePkwYcmNIXu3U_hydWNVHc3GIc_R6v3pZPhbr54en5d266KiEqRCGA2dcay0sVK2qpJSKWNqWuhQVcAPQAQdDqtZKzS0DKmvbUqVkp1nZsjm6_pu7DeNnMnFqBhc70_fKmzHFhtSc1MClrDJ69Q_djCn4fF1DCZV5m2B1pm7-qPx0jMHYZpsVqbBvCDS_mhvSHDSzH-slcB4</recordid><startdate>20131128</startdate><enddate>20131128</enddate><creator>Chandran, Mahesh</creator><creator>Bogdan Neculaes, V.</creator><creator>Brisco, Drew</creator><creator>Katz, Sarah</creator><creator>Schoonover, Jeffrey</creator><creator>Cretegny, Laurent</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>7U5</scope></search><sort><creationdate>20131128</creationdate><title>Experimental and numerical studies of microwave power redistribution during thermal runaway</title><author>Chandran, Mahesh ; Bogdan Neculaes, V. ; Brisco, Drew ; Katz, Sarah ; Schoonover, Jeffrey ; Cretegny, Laurent</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c290t-8e70737ddd8f05ba5999a1f2b4d48507e00c070e15bf9d7f30296fb2aa9cd34b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Aluminum oxide</topic><topic>Applied physics</topic><topic>Availability</topic><topic>Evolution</topic><topic>Heating</topic><topic>Holes</topic><topic>Mathematical analysis</topic><topic>Microwaves</topic><topic>Numerical analysis</topic><topic>Stability</topic><topic>Thermal instability</topic><topic>Thermal runaway</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Chandran, Mahesh</creatorcontrib><creatorcontrib>Bogdan Neculaes, V.</creatorcontrib><creatorcontrib>Brisco, Drew</creatorcontrib><creatorcontrib>Katz, Sarah</creatorcontrib><creatorcontrib>Schoonover, Jeffrey</creatorcontrib><creatorcontrib>Cretegny, Laurent</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Solid State and Superconductivity Abstracts</collection><jtitle>Journal of applied physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Chandran, Mahesh</au><au>Bogdan Neculaes, V.</au><au>Brisco, Drew</au><au>Katz, Sarah</au><au>Schoonover, Jeffrey</au><au>Cretegny, Laurent</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Experimental and numerical studies of microwave power redistribution during thermal runaway</atitle><jtitle>Journal of applied physics</jtitle><date>2013-11-28</date><risdate>2013</risdate><volume>114</volume><issue>20</issue><issn>0021-8979</issn><eissn>1089-7550</eissn><abstract>Plasma-assisted heating of Al2O3 is used to study power redistribution during thermal runaway when two samples are simultaneously heated in a microwave cavity. It is observed that thermal runaway in one of the samples completely suppresses the power availability to the other, demonstrating that thermal runaway in one region of the cavity acts as a “sink” for microwave power. Similar effects were observed during localized thermal runaway in a spatially extended single sample. Experimental trends were explored numerically by calculating the temperature evolution T (t) when one of the samples undergoes thermal runaway. Numerical investigation qualitatively captures the essential feature that thermal instability in one sample rapidly decreases the temperature of the second sample in agreement with the experimental observation. Experimental and numerical results as well as practical implications are discussed in the context of microwave processing of materials.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/1.4832826</doi></addata></record> |
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| ispartof | Journal of applied physics, 2013-11, Vol.114 (20) |
| issn | 0021-8979 1089-7550 |
| language | eng |
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| source | AIP Journals Complete; AIP Digital Archive; Alma/SFX Local Collection |
| subjects | Aluminum oxide Applied physics Availability Evolution Heating Holes Mathematical analysis Microwaves Numerical analysis Stability Thermal instability Thermal runaway |
| title | Experimental and numerical studies of microwave power redistribution during thermal runaway |
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