The Library
Study on the role of soot and heat fluxes in upward flame spread using a wall-resolved large eddy simulation approach
Tools
Fukumoto, Kazui, Wang, Changjian and Wen, Jennifer X. (2022) Study on the role of soot and heat fluxes in upward flame spread using a wall-resolved large eddy simulation approach. Journal of Thermal Analysis and Calorimetry, 147 . pp. 4645-4665. doi:10.1007/s10973-021-10791-6 ISSN 1388-6150.
|
PDF
WRAP-study-role-soot-heat-fluxes-upward-flame-spread-using-wall-resolved-large-eddy-simulation-approach-Wen-2021.pdf - Accepted Version - Requires a PDF viewer. Download (1449Kb) | Preview |
Official URL: http://dx.doi.org/10.1007/s10973-021-10791-6
Abstract
The present study aims to obtain further understandings of vertical flame spreading phenomena by analysing the influences of soot and individual heat flux components on PMMA walls using large eddy simulation. Total heat flux consists of convective and radiative components, but it is not clear which one has a significant role in fire spread. The computational code used is an in-house version of FireFOAM 2.2.x, which has recently undergone specific development and validation for flame spread studies by the authors. The present study has conducted numerical simulations for flame spread and full wall fire configurations. By scale-up of the PMMA size from 0.4 to 1.0 m, the convective heat flux decreased by 41.4% at the location of the pyrolysis front, radiative heat flux increased by 86.9%, and radiative heat flux due to soot grew by 215.2%. As the pyrolysis height increases from 0.3 to 1.0 m, the convective heat flux decreased by 26.8% at the location of the pyrolysis front. The radiative heat flux increased by 96.8%, and its components of combustion of the gaseous fuel and soot grew by 55.9% and 233.3%, respectively. Moreover, the ratio of radiative heat flux to total heat flux increased by 66.5%, and that of soot to radiative heat flux grew by 73.9%. The contribution of soot to radiative heat flux almost linearly increased against the pyrolysis height and that was higher at a higher pyrolysis height.
Item Type: | Journal Article | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Subjects: | Q Science > QC Physics | |||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | |||||||||
Library of Congress Subject Headings (LCSH): | Flame spread -- Simulation methods -- Mathematical models, Heat flux -- Research, Polymethylmethacrylate, Soot, Fire prevention -- Research | |||||||||
Journal or Publication Title: | Journal of Thermal Analysis and Calorimetry | |||||||||
Publisher: | Springer | |||||||||
ISSN: | 1388-6150 | |||||||||
Official Date: | April 2022 | |||||||||
Dates: |
|
|||||||||
Volume: | 147 | |||||||||
Page Range: | pp. 4645-4665 | |||||||||
DOI: | 10.1007/s10973-021-10791-6 | |||||||||
Status: | Peer Reviewed | |||||||||
Publication Status: | Published | |||||||||
Reuse Statement (publisher, data, author rights): | This is a post-peer-review, pre-copyedit version of an article published in Journal of Thermal Analysis and Calorimetry. The final authenticated version is available online at: http://dx.doi.org/10.1007/s10973-021-10791-6 | |||||||||
Access rights to Published version: | Restricted or Subscription Access | |||||||||
Date of first compliant deposit: | 9 June 2021 | |||||||||
Date of first compliant Open Access: | 24 May 2022 | |||||||||
RIOXX Funder/Project Grant: |
|
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |
Downloads
Downloads per month over past year