A Comparison of Flame Spread Characteristics over Solids in Concurrent Flow Using Two Different Pyrolysis Models
Two solid pyrolysis models are employed in a concurrent-flow flame spread model to compare the flame structure and spreading characteristics. The first is a zeroth-order surface pyrolysis, and the second is a first-order in-depth pyrolysis. Comparisons are made for samples when the spread rate reach...
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| Format: | Article |
| Language: | English |
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Wiley
2011-01-01
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| Series: | Journal of Combustion |
| Online Access: | http://dx.doi.org/10.1155/2011/250391 |
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| _version_ | 1832550427830255616 |
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| author | Ya-Ting Tseng James S. T'ien |
| author_facet | Ya-Ting Tseng James S. T'ien |
| author_sort | Ya-Ting Tseng |
| collection | DOAJ |
| description | Two solid pyrolysis models are employed in a concurrent-flow flame spread model to compare the flame structure and spreading characteristics. The first is a zeroth-order surface pyrolysis, and the second is a first-order in-depth pyrolysis. Comparisons are made for samples when the spread rate reaches a steady value and the flame reaches a constant length. The computed results show (1) the mass burning rate distributions at the solid surface are qualitatively different near the flame (pyrolysis base region), (2) the first-order pyrolysis model shows that the propagating flame leaves unburnt solid fuel, and (3) the flame length and spread rate dependence on sample thickness are different for the two cases. |
| format | Article |
| id | doaj-art-78cb67c6b992417cbde46ed8c833ac12 |
| institution | Kabale University |
| issn | 2090-1968 2090-1976 |
| language | English |
| publishDate | 2011-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Combustion |
| spelling | doaj-art-78cb67c6b992417cbde46ed8c833ac122025-02-03T06:06:50ZengWileyJournal of Combustion2090-19682090-19762011-01-01201110.1155/2011/250391250391A Comparison of Flame Spread Characteristics over Solids in Concurrent Flow Using Two Different Pyrolysis ModelsYa-Ting Tseng0James S. T'ien1Department of Mechanical and Aerospace Engineering, Case Western Reserve University, 10900 Euclid Avenue, 418 Glennan Building, Cleveland, OH 44106, USADepartment of Mechanical and Aerospace Engineering, Case Western Reserve University, 10900 Euclid Avenue, 418 Glennan Building, Cleveland, OH 44106, USATwo solid pyrolysis models are employed in a concurrent-flow flame spread model to compare the flame structure and spreading characteristics. The first is a zeroth-order surface pyrolysis, and the second is a first-order in-depth pyrolysis. Comparisons are made for samples when the spread rate reaches a steady value and the flame reaches a constant length. The computed results show (1) the mass burning rate distributions at the solid surface are qualitatively different near the flame (pyrolysis base region), (2) the first-order pyrolysis model shows that the propagating flame leaves unburnt solid fuel, and (3) the flame length and spread rate dependence on sample thickness are different for the two cases.http://dx.doi.org/10.1155/2011/250391 |
| spellingShingle | Ya-Ting Tseng James S. T'ien A Comparison of Flame Spread Characteristics over Solids in Concurrent Flow Using Two Different Pyrolysis Models Journal of Combustion |
| title | A Comparison of Flame Spread Characteristics over Solids in Concurrent Flow Using Two Different Pyrolysis Models |
| title_full | A Comparison of Flame Spread Characteristics over Solids in Concurrent Flow Using Two Different Pyrolysis Models |
| title_fullStr | A Comparison of Flame Spread Characteristics over Solids in Concurrent Flow Using Two Different Pyrolysis Models |
| title_full_unstemmed | A Comparison of Flame Spread Characteristics over Solids in Concurrent Flow Using Two Different Pyrolysis Models |
| title_short | A Comparison of Flame Spread Characteristics over Solids in Concurrent Flow Using Two Different Pyrolysis Models |
| title_sort | comparison of flame spread characteristics over solids in concurrent flow using two different pyrolysis models |
| url | http://dx.doi.org/10.1155/2011/250391 |
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