Experimental Study of a Thermal Plume Evolving in a Confined Environment: Application to Fires Problems
We propose to study the natural convection flow resulting from the interaction of a fire with walls that surround it. Indeed, when a fire occurs in a tunnel or in a tower block, it creates a thermal plume causing a heating of the neighbouring walls. This heating by thermal radiation of the walls c...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Isfahan University of Technology
2009-01-01
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| Series: | Journal of Applied Fluid Mechanics |
| Subjects: | |
| Online Access: | http://jafmonline.net/JournalArchive/download?file_ID=15228&issue_ID=199 |
| _version_ | 1818389533676273664 |
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| author | T. Naffouti M. Hammami M. Rebay R.B. Maad |
| author_facet | T. Naffouti M. Hammami M. Rebay R.B. Maad |
| author_sort | T. Naffouti |
| collection | DOAJ |
| description | We propose to study the natural convection flow resulting from the interaction of a fire with walls that surround it. Indeed,
when a fire occurs in a tunnel or in a tower block, it creates a thermal plume causing a heating of the neighbouring walls.
This heating by thermal radiation of the walls creates a phenomenon of thermosiphon which interacts with the plume. To
study this flow we simulated the problem at the laboratory where we placed a rectangular source heated by Joule effect at
the entrance of an open-ended vertical canal. The flow visualization by laser plan and the exploration of the thermal and
dynamic fields inside the canal enabled us to describe the flow structure. In order to better characterize this flow, we carried
out a fine analysis by studying the spectra of temperature fluctuations. This spectral analysis allowed us to clarify the
energetic evolution of the vortexes during their ascension and verify some known spectral laws. |
| first_indexed | 2024-12-14T04:43:15Z |
| format | Article |
| id | doaj.art-af10c5e14ac346afb9ff861718598b89 |
| institution | Directory Open Access Journal |
| issn | 1735-3645 |
| language | English |
| last_indexed | 2024-12-14T04:43:15Z |
| publishDate | 2009-01-01 |
| publisher | Isfahan University of Technology |
| record_format | Article |
| series | Journal of Applied Fluid Mechanics |
| spelling | doaj.art-af10c5e14ac346afb9ff861718598b892022-12-21T23:16:45ZengIsfahan University of TechnologyJournal of Applied Fluid Mechanics1735-36452009-01-01212938.Experimental Study of a Thermal Plume Evolving in a Confined Environment: Application to Fires ProblemsT. NaffoutiM. HammamiM. RebayR.B. MaadWe propose to study the natural convection flow resulting from the interaction of a fire with walls that surround it. Indeed, when a fire occurs in a tunnel or in a tower block, it creates a thermal plume causing a heating of the neighbouring walls. This heating by thermal radiation of the walls creates a phenomenon of thermosiphon which interacts with the plume. To study this flow we simulated the problem at the laboratory where we placed a rectangular source heated by Joule effect at the entrance of an open-ended vertical canal. The flow visualization by laser plan and the exploration of the thermal and dynamic fields inside the canal enabled us to describe the flow structure. In order to better characterize this flow, we carried out a fine analysis by studying the spectra of temperature fluctuations. This spectral analysis allowed us to clarify the energetic evolution of the vortexes during their ascension and verify some known spectral laws.http://jafmonline.net/JournalArchive/download?file_ID=15228&issue_ID=199Turbulent natural convection thermal plume thermosiphon spectral analysis vortex spectral laws |
| spellingShingle | T. Naffouti M. Hammami M. Rebay R.B. Maad Experimental Study of a Thermal Plume Evolving in a Confined Environment: Application to Fires Problems Journal of Applied Fluid Mechanics Turbulent natural convection thermal plume thermosiphon spectral analysis vortex spectral laws |
| title | Experimental Study of a Thermal Plume Evolving in a Confined Environment: Application to Fires Problems |
| title_full | Experimental Study of a Thermal Plume Evolving in a Confined Environment: Application to Fires Problems |
| title_fullStr | Experimental Study of a Thermal Plume Evolving in a Confined Environment: Application to Fires Problems |
| title_full_unstemmed | Experimental Study of a Thermal Plume Evolving in a Confined Environment: Application to Fires Problems |
| title_short | Experimental Study of a Thermal Plume Evolving in a Confined Environment: Application to Fires Problems |
| title_sort | experimental study of a thermal plume evolving in a confined environment application to fires problems |
| topic | Turbulent natural convection thermal plume thermosiphon spectral analysis vortex spectral laws |
| url | http://jafmonline.net/JournalArchive/download?file_ID=15228&issue_ID=199 |
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