Numerical study on the spontaneous combustion of high-density polyethylene

Shi, L, Gong, J, Huang, D, Liu, X and Zhang, K 2018, 'Numerical study on the spontaneous combustion of high-density polyethylene', Procedia Engineering, vol. 211, pp. 621-628.

Document type: Journal Article
Collection: Journal Articles

Title Numerical study on the spontaneous combustion of high-density polyethylene
Author(s) Shi, L
Gong, J
Huang, D
Liu, X
Zhang, K
Year 2018
Journal name Procedia Engineering
Volume number 211
Start page 621
End page 628
Total pages 8
Publisher Elseiver
Abstract Although non-charring polymers have been frequently utilized in the industry, public transport and buildings, their fire risk could be more serious comparing to the others such as timber fire. This is much due to the melting process in solid phase and also the high temperature and a large number of gas volatiles in gas phase. The numerical modeling of non-charring polymers could be complicated because of the difficulty in describing melting processes and in-depth radiation (for some transparent polymers). In this study, a numerical model was developed to predict the fire behaviors of a typical non-charring polymer (high-density polyethylene). The focus was on its fire behaviors under spontaneous ignition conditions, namely without the acceleration of spark plug. The model has considered both solid and gas phases, such as pyrolysis reactions, melting process, in-depth radiation, gas and liquid transportation inside the solid phase, and gas phase combustion. The n umerical results for solid phase were validated by cone calorimeter experiment. For gas phase modeling, the predicted temperature and gas velocity are consistent with the major heat transfer processes.
Subject Construction Materials
Keyword(s) high-density polyethylene
melting process
non-charring polymer
pyrolysis modeling
spontaneous combustion
DOI - identifier 10.1016/j.proeng.2017.12.056
Copyright notice © 2018 The Authors
ISSN 1877-7058
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