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The effect of convective motion within liquid fuel on the mass burning rates of pool fires – a numerical study
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Xu, Baopeng and Wen, Jennifer X. (2021) The effect of convective motion within liquid fuel on the mass burning rates of pool fires – a numerical study. Proceedings of the Combustion Institute, 38 (3). pp. 4979-4986. doi:10.1016/j.proci.2020.07.099
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WRAP-The-effect-convective-motion-liquid-fuel-mass-burning-rates-pool-fires-Wen-2020.pdf - Accepted Version - Requires a PDF viewer. Available under License Creative Commons Attribution Non-commercial No Derivatives 4.0. Download (1324Kb) | Preview |
Official URL: https://doi.org/10.1016/j.proci.2020.07.099
Abstract
To improve numerical simulation of liquid pool fires and remove the need for experimentally measured or empirically calculated mass burning rates as boundary conditions, a fully coupled three-dimensional (3-D) numerical formulation, which directly solves convective motion in the fuel region by incorporating inhomogeneous heat feedback, is formulated. The fire dynamics is modelled using the large eddy simulation (LES) approach. Incompressible laminar flow formation is applied to the liquid fuel region, assuming constant thermo-physical properties except for the density which follows the Boussinesq approximation. The numerical formulation of the two phases is solved using a fully coupled conjugate heat transfer approach at the pool surface. The coupled model is validated against published measurements for a thin-layer heptane pool fire and a deep methanol pool fire. The convective motion within the liquid phase is found to have important effects on the pool fire mass burning rate and its neglection would result in a fast rise and over-prediction of the mass burning rate.
| Item Type: | Journal Article | ||||||||||||
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| Subjects: | Q Science > QA Mathematics Q Science > QC Physics |
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| Divisions: | Faculty of Science > Engineering | ||||||||||||
| Library of Congress Subject Headings (LCSH): | Fire -- Computer simulation, Marangoni effect, Heat -- Transfer, Eddies -- Computer simulation | ||||||||||||
| Journal or Publication Title: | Proceedings of the Combustion Institute | ||||||||||||
| Publisher: | Elsevier Inc. | ||||||||||||
| ISSN: | 1540-7489 | ||||||||||||
| Official Date: | 2021 | ||||||||||||
| Dates: |
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| Volume: | 38 | ||||||||||||
| Number: | 3 | ||||||||||||
| Page Range: | pp. 4979-4986 | ||||||||||||
| DOI: | 10.1016/j.proci.2020.07.099 | ||||||||||||
| Status: | Peer Reviewed | ||||||||||||
| Publication Status: | Published | ||||||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||||||
| Copyright Holders: | © 2020 The Combustion Institute. Published by Elsevier Inc. All rights reserved. | ||||||||||||
| RIOXX Funder/Project Grant: |
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