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Title: An experimental and modeling study of fires in ventilated ducts; Part 1: Liquid fuels

Abstract

A theoretical model for fire propagation through a fuel-lined duct with a radially well-mixed axial flow is presented. The gas-phase is modeled as a steady-state process whereas the condensed-phase (fuel source) is taken to be the cause of transient fire propagation along the duct. Experiments were performed in a small-scale duct where fire propagation and gas temperature histories were acquired. Experimental results confirm hypotheses of pseudo-steady-state gas-phase processes. Theory and experiment display transient fire propagation for typical duct fire scenarios where initial fuel mass loading is constant with respect to duct length. The phenomena observed, as predicted by theory, is an initial jump'' of the fully developed combustion process followed by convergence to a steady-state constant fire propagation speed. The theory is in all important aspects able to quantitatively model the experimental results.

Authors:
; ;  [1]
  1. (Univ. of the Witwatersrand, Johannesburg (South Africa). Dept. of Chemical Engineering)
Publication Date:
OSTI Identifier:
5153162
Resource Type:
Journal Article
Journal Name:
Combustion and Flame; (United States)
Additional Journal Information:
Journal Volume: 96:4; Journal ID: ISSN 0010-2180
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 02 PETROLEUM; DUCTS; FLAME PROPAGATION; VENTILATION SYSTEMS; FLUID MECHANICS; MATHEMATICAL MODELS; MECHANICS; 400800* - Combustion, Pyrolysis, & High-Temperature Chemistry; 020600 - Petroleum- Health & Safety

Citation Formats

Comitis, S.C., Glasser, D., and Young, B.D. An experimental and modeling study of fires in ventilated ducts; Part 1: Liquid fuels. United States: N. p., 1994. Web. doi:10.1016/0010-2180(94)90109-0.
Comitis, S.C., Glasser, D., & Young, B.D. An experimental and modeling study of fires in ventilated ducts; Part 1: Liquid fuels. United States. doi:10.1016/0010-2180(94)90109-0.
Comitis, S.C., Glasser, D., and Young, B.D. Tue . "An experimental and modeling study of fires in ventilated ducts; Part 1: Liquid fuels". United States. doi:10.1016/0010-2180(94)90109-0.
@article{osti_5153162,
title = {An experimental and modeling study of fires in ventilated ducts; Part 1: Liquid fuels},
author = {Comitis, S.C. and Glasser, D. and Young, B.D.},
abstractNote = {A theoretical model for fire propagation through a fuel-lined duct with a radially well-mixed axial flow is presented. The gas-phase is modeled as a steady-state process whereas the condensed-phase (fuel source) is taken to be the cause of transient fire propagation along the duct. Experiments were performed in a small-scale duct where fire propagation and gas temperature histories were acquired. Experimental results confirm hypotheses of pseudo-steady-state gas-phase processes. Theory and experiment display transient fire propagation for typical duct fire scenarios where initial fuel mass loading is constant with respect to duct length. The phenomena observed, as predicted by theory, is an initial jump'' of the fully developed combustion process followed by convergence to a steady-state constant fire propagation speed. The theory is in all important aspects able to quantitatively model the experimental results.},
doi = {10.1016/0010-2180(94)90109-0},
journal = {Combustion and Flame; (United States)},
issn = {0010-2180},
number = ,
volume = 96:4,
place = {United States},
year = {1994},
month = {3}
}