The Library
Non-grey radiative heat transfer modelling in LES-CFD simulated methanol pool fires
Tools
Sikic, Ivan, Dembele, Siaka and Wen, Jennifer X. (2019) Non-grey radiative heat transfer modelling in LES-CFD simulated methanol pool fires. Journal of Quantitative Spectroscopy and Radiative Transfer . doi:10.1016/j.jqsrt.2019.06.004 ISSN 0022-4073.
|
PDF
WRAP-non-grey-radiative-heat-transfer-modelling-simulated-pool-Wen-2019.pdf - Accepted Version - Requires a PDF viewer. Available under License Creative Commons Attribution Non-commercial No Derivatives 4.0. Download (1531Kb) | Preview |
Official URL: http://dx.doi.org/10.1016/j.jqsrt.2019.06.004
Abstract
Non-grey radiation modelling of gas-phase combustion products is performed during runtime of large eddy simulations (LES) of 30cm, 20kW methanol pool fires, based on the experiments of Klassen and Gore (1992) and Weckman and Strong (1996). FireFOAM, the turbulent flame solver part of open source CFD platform OpenFOAM®, was modified to include a new array of gas radiation models. Two grey and three non-grey implementations of the weighted-sum-of-grey-gases (WSGG) are compared in terms of both accuracy and CPU efficiency, along with a 'box' model based on the exponential wide band model (EWB) but specially optimised for fire scenarios. Turbulence-radiation interactions (TRI) are taken into account for the self-correlation of temperature in the emission term of the radiative transfer equation (RTE). Non-grey WSGG models consistently performed better than their grey counterparts, but the two newer WSGG correlations based on up-to-date spectral databases did not perform noticeably better or worse than the older WSGG model, which is a departure from other studies in oxy-fuel conditions. The work also showed that TRI is very important for the accurate prediction of the pool surface radiant feedback and the total radiant output. Some recommendations are made for the fire and radiation community.
Item Type: | Journal Article | ||||||
---|---|---|---|---|---|---|---|
Subjects: | Q Science > QC Physics | ||||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||
Library of Congress Subject Headings (LCSH): | Heat -- Transmission, Spectrum analysis | ||||||
Journal or Publication Title: | Journal of Quantitative Spectroscopy and Radiative Transfer | ||||||
Publisher: | Elsevier Inc. | ||||||
ISSN: | 0022-4073 | ||||||
Official Date: | 11 June 2019 | ||||||
Dates: |
|
||||||
DOI: | 10.1016/j.jqsrt.2019.06.004 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||
Date of first compliant deposit: | 12 June 2019 | ||||||
Date of first compliant Open Access: | 11 June 2020 | ||||||
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