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Heat fluxes under the ceiling induced by wall fires with various burner aspect ratios in a channel
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Tang, Fei, Hu, Peng, Zhang, Jianping and Wen, Jennifer X. (2020) Heat fluxes under the ceiling induced by wall fires with various burner aspect ratios in a channel. Proceedings of the Combustion Institute . doi:10.1016/j.proci.2020.05.029 (In Press)
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WRAP-Heat-fluxes-ceiling-wall-fires-burners-channel-Wen-2020.pdf - Accepted Version Embargoed item. Restricted access to Repository staff only until 5 August 2021. Contact author directly, specifying your specific needs. - Requires a PDF viewer. Available under License Creative Commons Attribution Non-commercial No Derivatives 4.0. Download (1257Kb) |
Official URL: https://doi.org/10.1016/j.proci.2020.05.029
Abstract
A detailed experimental investigation of wall fires in a channel was conducted to study the heat fluxes under the ceiling. Various burner aspect ratios and fire heat release rates were employed to simulate different wall fire scenarios. The effect of source-ceiling height was also examined. The results show that the distribution of heat flux under the ceiling from fires on rectangular burners was significantly influenced by the burner aspect ratio. As the burner aspect ratio increased, the heat flux under the ceiling at a given position perpendicular to the side wall increased. It was found that the existing heat flux correlation developed for a square burner could not capture such influence as it did not include the burner aspect ratio. A new predictive model based on the equivalent burner diameter concept was proposed incorporating the burner aspect ratio and was shown to predict well the heat flux for all the cases with different heat release rates, burner aspect ratios and source-ceiling heights. The model was also validated against available data in the literature which were not used in its derivation. Further analysis was also conducted for the temperature contours constructed from the temperature measurements under the ceiling.
| Item Type: | Journal Article | |||||||||
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| Subjects: | T Technology > TH Building construction T Technology > TJ Mechanical engineering and machinery |
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| Divisions: | Faculty of Science > Engineering | |||||||||
| Library of Congress Subject Headings (LCSH): | Heat -- Transmission, Flame spread, Fires | |||||||||
| Journal or Publication Title: | Proceedings of the Combustion Institute | |||||||||
| Publisher: | Elsevier Inc. | |||||||||
| ISSN: | 1540-7489 | |||||||||
| Official Date: | 2020 | |||||||||
| Dates: |
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| Date of first compliant deposit: | 5 August 2020 | |||||||||
| DOI: | 10.1016/j.proci.2020.05.029 | |||||||||
| Status: | Peer Reviewed | |||||||||
| Publication Status: | In Press | |||||||||
| Access rights to Published version: | Restricted or Subscription Access | |||||||||
| RIOXX Funder/Project Grant: |
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