EXPERIMENTAL MEASUREMENT, ANALYSIS AND MODELLING OF DEPENDENCY EMISSIVITY IN FUNCTION OF TEMPERATURE
We propose a direct method of measurement of the total emissivity of opaque samples on a range of temperature around the ambient one. The method rests on the modulation of the temperature of the sample and the infra-red signal processing resulting from the surface of the sample we model the total em...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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El Oued University
2015-08-01
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| Series: | Journal of Fundamental and Applied Sciences |
| Subjects: | |
| Online Access: | http://jfas.info/index.php/jfas/article/view/178 |
| _version_ | 1819294147836641280 |
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| author | N. Baba Ahmed A. Benmoussat T. Benouaz |
| author_facet | N. Baba Ahmed A. Benmoussat T. Benouaz |
| author_sort | N. Baba Ahmed |
| collection | DOAJ |
| description | We propose a direct method of measurement of the total emissivity of opaque samples on a range of temperature around the ambient one. The method rests on the modulation of the temperature of the sample and the infra-red signal processing resulting from the surface of the sample we model the total emissivity obtained in experiments according to the temperature to establish linear correlations. This leads us to apply the method of optimal linearization associated the finite element method with the nonlinear problem of transfer of heat if thermal conductivity, the specific heat and the emissivity of studied material depend on the temperature. We obtain a good agreement between the resolution of the nonlinear equation of heat and the results obtained by the experimentation.<strong> </strong>. |
| first_indexed | 2024-12-24T04:21:42Z |
| format | Article |
| id | doaj.art-2025358bf82e46128bfb98e77be629ad |
| institution | Directory Open Access Journal |
| issn | 1112-9867 |
| language | English |
| last_indexed | 2024-12-24T04:21:42Z |
| publishDate | 2015-08-01 |
| publisher | El Oued University |
| record_format | Article |
| series | Journal of Fundamental and Applied Sciences |
| spelling | doaj.art-2025358bf82e46128bfb98e77be629ad2022-12-21T17:15:46ZengEl Oued UniversityJournal of Fundamental and Applied Sciences1112-98672015-08-0121122210.4314/jfas.v2i1.2133EXPERIMENTAL MEASUREMENT, ANALYSIS AND MODELLING OF DEPENDENCY EMISSIVITY IN FUNCTION OF TEMPERATUREN. Baba AhmedA. BenmoussatT. BenouazWe propose a direct method of measurement of the total emissivity of opaque samples on a range of temperature around the ambient one. The method rests on the modulation of the temperature of the sample and the infra-red signal processing resulting from the surface of the sample we model the total emissivity obtained in experiments according to the temperature to establish linear correlations. This leads us to apply the method of optimal linearization associated the finite element method with the nonlinear problem of transfer of heat if thermal conductivity, the specific heat and the emissivity of studied material depend on the temperature. We obtain a good agreement between the resolution of the nonlinear equation of heat and the results obtained by the experimentation.<strong> </strong>.http://jfas.info/index.php/jfas/article/view/178Emissivity, Température, optimal Linearisation, finite elements. |
| spellingShingle | N. Baba Ahmed A. Benmoussat T. Benouaz EXPERIMENTAL MEASUREMENT, ANALYSIS AND MODELLING OF DEPENDENCY EMISSIVITY IN FUNCTION OF TEMPERATURE Journal of Fundamental and Applied Sciences Emissivity, Température, optimal Linearisation, finite elements. |
| title | EXPERIMENTAL MEASUREMENT, ANALYSIS AND MODELLING OF DEPENDENCY EMISSIVITY IN FUNCTION OF TEMPERATURE |
| title_full | EXPERIMENTAL MEASUREMENT, ANALYSIS AND MODELLING OF DEPENDENCY EMISSIVITY IN FUNCTION OF TEMPERATURE |
| title_fullStr | EXPERIMENTAL MEASUREMENT, ANALYSIS AND MODELLING OF DEPENDENCY EMISSIVITY IN FUNCTION OF TEMPERATURE |
| title_full_unstemmed | EXPERIMENTAL MEASUREMENT, ANALYSIS AND MODELLING OF DEPENDENCY EMISSIVITY IN FUNCTION OF TEMPERATURE |
| title_short | EXPERIMENTAL MEASUREMENT, ANALYSIS AND MODELLING OF DEPENDENCY EMISSIVITY IN FUNCTION OF TEMPERATURE |
| title_sort | experimental measurement analysis and modelling of dependency emissivity in function of temperature |
| topic | Emissivity, Température, optimal Linearisation, finite elements. |
| url | http://jfas.info/index.php/jfas/article/view/178 |
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